I am a Jazz bass guy! I had a great 1973 but my wrist did not agree with the 7.25 radius. I got an early Sadowsky and found that some of the earlier models had slightly skinnier neck. So I've tried a few 2008 and newer Jazz basses and I swear on some of them the neck is just a little bigger with a slightly rounder radius. Not quite P bass size but think Sterling compared to Stingray. Not on every one either. Anyone else notice this?