On a 2-cavity, heavily used, aluminum mold, the Mfg. installed handle "keeper pin" is backing out. I have tried high tack adhesive - didn't hold. Reinstalling with "more force" (the "slightly" larger hammer approach) - didn't last. I am thinking now that the pin-hole is forever loose. Only one side though...
I could possibly drill and tap the mold for a side installed set screw, but that is a last resort and to me, a lot of "close tolerance" work with tools I do not currently own and experience I do not have.
What am I not seeing in making this condition a thing of the past?