Joe, In the pics of the "naked" machine, it looks like there's a set screw on the front of the machine...right in front of the tension assembly. Unless that's just how the light's hitting a pit in the metal or something. I'm sure Rain's right...there's something out of line there. Maybe a bent shaft because generally there's no wiggle room for it to be put in lopsided. Or maybe something stuck behind the crooked piece.