I have at least 10 or so Lee Die sets and never ever had a issue with the deprimer pin hold. Maybe popped up twice on some crimped primers
Even stuck a case a few times and removed it using the correct Lee instructions
Use the correct pliers as mention above and you should have no issues. I don't understand all the "mods"?? The decapper clamp is tapered, do not remove it, loosen only
I know you are not talking about a stuck case but here is tightening it,
LEE makes the best depriming pins out there! They are made from roller bearings, one would have to try really really hard to break one, yet some folks do seem to do it??
yea sure, except they used the wrong end on that 1/2" combination wrench, should have used the box end.
jmo,
.