I'm wondering how much slop on the x axis crank of a bridgeport is normal. The one in our shop freely turns about 180 degrees between travel to left and right. This is certainly annoying but is it to be expected? I must confess that I have not looked in the manual(if we have one) to see if there is a simple adjustment to tighten this up. The situation occurs anywhere along the length of the x axis. The machine is a 20 to 30 year old (I'm guessing) bridgeport with variable speed head. The x axis has an aftermarket add-on drive attached to the right hand end. Thanks in advance for your input.