Hi, well i tried replacing the coils on my 35 hp, no sparks, compression checks out, no spark, replaced wiring, no spark. The only thing left I can do is get a new powerpack since the one thats on their looks fried. Also, I noticed its been taken off alot with wohever had it first, the screws are stripped and they dont match, so im banking that could be my prob. Anyone know where I can find a used pack? any suggestions? my serial is 0B149149 35 HP 1987 Mercury power trim, thanks...