I have a grizzly chuck (the cheap $50 one) and I am having trouble keeping the grip on the piece from coming undone when I am expansion chucking (pushing from inside out). I realize it's becuse the way it is tightened with the tommy bars, when expansion chucking, the chuck undone by the force of the lathe spinning. Is there any remedy for this, or is it just not possible to expansion chuck with a tommy-bar style chuck.