I have a set of t-bars i yanked from a parts car a few months ago. Like a dummy I stood them up in a corner and forgot about them. a couple days ago i found them and noticed they have a slight arc to them and they dont roll smoothly across the garage floor. I put a straightedge on them and they are definitely not a flat line. 1) could that have happened that quickly?? ( about 3 months) 2) or is it probably previous wear?? 3) Or is that how they come?? neal zimmerman, eugene oregon