My VM100 35mm jaws recently became sloppy and when I tried to tighten the screw it was stuck to the jaws. So much so that after spraying with WD-40 it came loose but it turned with the screw still attached to the jaw so the jaw and screw came out of the chuck as one. In doing that I nicked up the raised arch on the jaw that fits into the corresponding grove on the chuck body. After using a triangle file I was able to get the jaw to seat properly and able to put the screw back in. My question - what maintenance do you routinely do so something like this doesn't happen? I will add, these jaws are pretty much dedicated to that chuck so I rarely change them.