As an add on, does anyone squat with no center knurling? How does that work out?
Edit: Found this old thread, some seem to find squatting without center knurling to be a non-issue, while at least one (Marotta) was quite clear that he disliked bars without center knurling. Greg C mentions using athletic tape in the center of the bar. Not a bad idea.
http://startingstrength.com/resource...t=20462&page=1
Lots of opinions on center knurling here too:http://startingstrength.com/resource...t=16516&page=1