Metrodorus is quoted by Plutarch as "Τhis very thing is the good: Escaping from the bad -- because It is not possible for the Good to be placed anywhere, when neither What is painful nor What is distressing is any longer making way for it.
Wow that's another one that if I've read it before I don't recall it --- but isn't that making exactly the same point in another way!
I don't want to press to hard since we're not talking about the Greek wording exactly, but do I read that correctly to say that we should understand that "removing pain" is the same thing as pleasure because pleasure cannot exist where pain resides?
Is the implication that like two atoms, where only one atom can be in a place at a time, you have to move pain out of the way for pleasure to occupy the same spot?
Now in this case we'd also want to refer back to where Torquatus said that we don't admit that when one pleasure leaves that pain *necessarily* fills its space, because the norm would be that one pleasure can take the place of another ("variety").
So there's not necessarily going to be a pain at a particular location if we've ordered our lives successfully, but as to adding *more* pleasure to the total we're experiencing, we can't add any more pleasure once all pain is ejected.
Are you reading it that way Bryan?