I have a new to me Jet contractor table saw and I'm having issues with the fence. I'm not sure if it is me or the fence. The fence rides on the front rail and just floats on the back rail with a plastic bumper. The problem is once I get the width set when I lock the fence the fence squares up and I have to re-adjust the fence width. Basically the back of the fence isn't moving with the front, my previous fence on a ryobi contractor saw had a way that forced the back to move with the front.