For the record, I don't think the kinetic/katastematic distinction is the most paramount issue to be resolved in Epicurean philosophy. I do, however, believe it needs to be addressed. As with all things Epicurus, the loss of ancient texts from actual Epicureans is problematic. We have that whole "through a glass darkly" issue in trying to get at what the school itself thought.
On rereading (okay, skimming through) Nikolsky, I find that argument less and less compelling. That paper, to my reading, seems to be implying Epicurus didn't use the distinction between kinetic/katastematic. This simply seems to blatantly contradict the quotation from Epicurus himself in Choices and Avoidances cited in DL X.136.
I remain intrigued by Gosling and Taylor.
We've had some knock-down-drag-out threads on this. I was reading a good long one from 2023! There is no one consensus among long time forum members that I can see. That doesn't make us rivals! Just means this is a thorny issue with multiple possible perspectives. This seems a good a place as any to rejoin that discussion, because Kalosyni 's question about negation follows right on from Epicurus' use of a-taraxia and a-ponia.