97 Intruder 150, with updates/pinned heads. Question pertains to, what happens on the cyclinders where the plugs are not indexed? When I got the boat I noticed they were not, so I moved em around and got 4 of the 6 in the right zone. It's time to change plugs, and the dealer only has 6...which means surely there will be one or 2 that wont index. I wanted to get 8 hoping to get 6 that would end up in the right zone. And dang them thangs are expensive.....9.10 a piece?