Hi Felix,
Awesome, easier that you have had that experience too and then you know what I’m referring to 
First to clarify this:
I can see why it seems to imply that, so just want to clarify that I’m not saying that. A PCE can indeed happen at any time. I even had one happen, spontaneously, even from the point of being upset and resentful due to a heated and intense argument with my partner. We weren’t actively fighting at that moment but in the simmering phase, I was next to her, and the PCE just spontaneously happened. I remember the thought that it was amazing how there wasn’t even anyone to be on the receiving end of someone else’s upset – or maybe that there was no one to be upset in the first place. So even feeling good is not a prerequisite for a PCE.
That being said it’s just that they are more likely to happen or perhaps more easy to induce while feeling good rather than while feeling upset of course. And similarly it’s easier to induce from an EE rather than from a basic feeling good.
About how to have the EEs happen, as far as I can tell it’s similar to a PCE in that it’s a matter of wanting it and then allowing it to happen lol. I am somewhat sure that this is mostly entirely unhelpful for someone who hasn’t gotten the knack of it yet lol. I guess one question for you is what preceded the EEs you had some years ago?
There’s another similarity with PCEs in that of course it is easier to get into an EE if already feeling good.
In terms of this:
The main thing I really wanna highlight, which I have been highlighting the whole time actually, is that these are not two different levers, with felicity on one side and sensuosity on the other. I think you are using the word “sensuosity” but you are not referring to the same thing as what that word refers to in actualist lingo / on the AFT site.
I’ve collected some quotes and added emphases and commentary:
RICHARD: The other aspect of the actualism method – other than felicity/ innocuity – is sensuosity: feeling felicitous/ innocuous, each moment again, brings one closer to one’s senses and the resultant wonder at the brilliance of the sensate world can enable apperception … the direct experience of the world as-it-is. [link]
Note that! The senuosity is “the resultant wonder” at the brilliance of the sensate world, ie something ‘I’ feel, not something to do with the sensate experience itself per se.
RICHARD: Yes, sensuousness is the wondrous awareness of the marvel of being here now at this moment in time and this place in space – which awareness is combined with the fascination of contemplating that this moment is one’s only moment of being alive – and one is never alive at any other time than now. [link]
Again note that, sensuousness is “the wondrous awareness” of being here now, which is combined with “the fascination of contemplating” that this is one’s only moment of being alive.
Sensuosity/sensuousness is this wondrous/fascination awareness/contemplation.
Note those words: wondrous and fascination. These are things ‘I’ feel, they are affective!
RICHARD: 6. Habitual felicity/ innocuity, and its concomitant enjoyment and appreciation, facilitates naïve sensuosity … a consistent state of wide-eyed wonder, amazement, marvel, and delight. [link]
Note that again, sensuosity is a state of consistent wide-eyed wonder, amazement, marvel, and delight – affective!! These are felicitous feelings!!
And note how similar those descriptors are to what an EE is like – very similar indeed isn’t it? 
So I think you have misappropriated the term “sensuosity” to be something akin to focusing on the senses when it seems too hard to be felicitous… but focusing on the senses isn’t the point, per se. If that worked then meditation would work 
. The point is the felicity of it all! The feeling wonder and fascination and amazement and marvel and delight.
In other words it’s not like you have felicitous feelings on one side and sensate experiencing on the other, and there’s a choice to pick whatever the easier one seems to be. It’s all felicitous feelings, it’s all one direction… and the more felicitous you are, then at a certain point you can become/find that you have become sensuous/revel in sensuosity.
The reason I am taking the lengths to expound on this is to hopefully save you some time of not going down the path of trying to focus on the senses, it is a mistake that many have made (such as the affers, and me as well).
In terms of what to actually ‘do’ as an approach, I think you are right to be suss of whatever feels like a kind of artifice. Sincerity is indeed key…
I have also grown suss of myself giving advice to other people lol, I don’t wanna lead anyone awry … I feel confident about what I wrote above though
I guess one way to put it is that as you know what feeling good is like and you have a new habit of feeling good, I think you cannot go wrong by continuing with that habit . The more consistently you feel good the easier it will be to keep feeling good. And when you’re continuously feeling good, then the next level up will hove into view, feeling great… both as a gradual thing but also you will have moments where you ‘see’ it as an option, a choice, and then you can take it when it comes. This will also lead to more EEs and PCEs and having those will be how you develop the knack to have more of them also …
Ha yea exactly just like you wrote just now:
I think this will be more fruitful than trying to focus on the senses in a neutral affect kinda way. Just keep in mind what is possible re: sensuosity and then see what happens! I’m not sure where the “thinning out” experiences you are having fit into it all, maybe it’s at a point where you are relatively interfering with feeling good a lot less but not yet at the point of really marvelously wondrously reveling in it all… ultimately up to you to see!
Cheers,
Claudiu