Pelican IMS bearing stud has separated inside shaft

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I will go ahead and try to cinch up the stud back into the bearing. the thing that got chewed up was the head of the stud, from slipping several times with a slotted screwdriver in it trying to get the nut off. Took impact driver to sort it out. I'll use my dental mirror to inspect the threads before trying to do anything, and if it gets stuck I'm pulling the whole thing out again. I have the set screws in, both rear tensioners out and camshaft ends marked, but would like to lock them all the same - is there a tool available to do this that's not a specialty porsche piece?