Yeah, I think you're wrong on the Sampras/Edberg comments. Both used their 85s for the duration. Even when Edberg endorsed the 6.1 he still used his 85 but painted like it so far as I recall. On occasion you can even find a PS85 with that paint-job. So far as Lendl using a larger headsize GTX Mid at Wimbledon I think that may also have been a paint-job. Someone on the board here a while back owned a pile of Lendl frames and posted pics of the showing the various paint-jobs he went through.