[AZKen]

Good info from FMAP. As he said, thread problem. However you DID NOT state what won't fit. We assume you mean won't thread into any hole in that bank? Can't imagine all stripped on one head only. I have to think this out. So on one bank you have long thread plugs and the other has short thread plugs ? and the short only fit one bank? and the long fits.......??

The Jolly AC4 under known good parts is 3/4 long thread. I would go with that. I did.