RE: Lee dies messing up?
Clean the decapping pin with some type of degreaser. Get all traces of oil off of it, then sldie it back into the collet. I put the die body in a vise, and the use a box end wrench to tighten the collet to hold the pin. The pin is designed to slide up thru the collet if it hits something. Sometimes they do pull out if they are not tight. Put a bit of case lube on the case mouth, that will help as well.