What's the best way to find a dead cylinder?

I am not going to re-type what I said in post #15, it is all correct & the quickest way to start the trouble shooting process of isolating the problem. Short out each cyl one at a time, & you get an rpm drop. If rpm drop is about the same for ea cyl, you have a common problem across all cyls. If one cyl has a noticeably larger rpm drop, then that cyl needs looking at, possibilities in post #15.