I just picked this up off of craigslist- The guy who sold it to me said it was originally being used to assemble power steering pumps for GM. The crossbar that is supposed to stabilize the bench is slotted into place and as a result there is a little wobble. Does anyone else have a bench constructed this way and if so do they have any suggestions to how to make it more rigid? In the short term I have a bunch of clamps on it, which seems to help. The legs are all 13 gauge steel.