I have a 350' chevy 4 bolt main block with 2 sets of caps. Bothe sets are numbered 2,3 and 4 but I am sure you already know my question. I have cleaned up the block and bothe sets of caps. I have installed bothe sets separately. I don't ever remember having to tap them in with a medium sized hammer, so how do I determine what set is going to work? My smart _ _ _ buddy's said to toss a coin heads or tails? These caps were wired separately in a wooden box, I can't remember how long I have had the 350, I am sure the early 70's.