My initial post to this thread that John and Paul had pretty much patched things up is now a thing of the past for me since I've read Seamann's "The Final Days of John Lennon."...
It seems by 1980 they didn't have much of a relationship at all but the rivalry was still intense as John got back into music when hearing Paul's 'Coming Up' on the radio...
I highly recommend any Beatle fan read Seamann's book. My Facebook friend Tony Bramwell even recommended this book as one of only two "must-read" Beatle books.