I’ve always used Teflon tape on direct threads, haven’t used any anti seize compound on taper mount threads.

I’ve only got one mount that locks up kinda snug and requires some effort to remove regardless of being fired or not. I think there’s a tiny tiny imperfection likely on the mount’s taper. Unfortunately it’s pinned in place so not an easy fix but the silver lining is that it’s not “bad”, just annoying sometimes. All my other mounts work just fine