Correction:
With an inline 4 and a Tri-Y header: cylinder 3 doesn't have much of an effect on cylinder 1 compared to the cylinder it's paired with.
The cylinder pairings are 1&4 and 2&3.
![Head Scratch :headscratch:](https://board.marlincrawler.com/Smileys/marlin/headscratch.gif)
are you sure? I'm not going out tonight to see so ok, use 1 and 4 instead