Any 1442 owners have problem with spindle lock not engaging enough to stop spindle from turning? I can't hold button in hard enough to lock. When I hold button in and try to back chuck off it slips and pushes button out against me. No amount of force will engage lock enough to hold. I have chuck jammed and no other good way to hold spindle good enough to back chuck off. Been this way out of box but didn't pose problem til my chuck stuck. Derryl