When I am using the bridgeport mill vibration makes the vise handle fall off on the floor. It also makes the mill crank handle that cranks the table up down fall on the floor too. If I don't pull both handles off and set them on the work bench before I start to mill they both fall off. Today I was cutting .010" off the edge of .375" plastic to square the edge both handles fell off every time I made a pass across the 4" edge. Is there any trick to keeping the handles from falling off on the floor???