Hey there, I have a question to anyone who is willing to answer, I've been working on my 15 hp evinrude (like 1970) or so, and ive fixed the foot which had a problem with the clutchdog cradle and now im working on the powerhead; my issue is that it either doesnt get up to high rpm or doesnt want to start, i have to adjust the mixture screw for running well at a higher throttle setting (leaner mix) and being able to start it (fat mix) worth mentioning it doesnt idle without giving it a fair bit of throttle. Ive cleaned the carb and it seems to work fine as far as I can tell, I've suspected the electical but i got spark on both cylinders so not that either.the fuel pump ive ordered a rebuild kit for, i suspect it a bit **** and ive had bad luck with leaky primer bulbes. What i'm wondering is if these symptoms are indicative of something I haven't thought of, a mechanic who looked at the engine told me compression is fine as well and can hear the pressure when i spin the flywheel. Can a bad pump cause the engine to be hard to start and having to adjust the mixture manually in order to get it running well? Do I need to look at the carb again? Been working on this for a year now and learned as I went and I'm getting slightly frustrated. Also worth mentioning is that I ran it on the water and it ran like a dog, didn't even get the small boat I have it on up to plane. Someone got an idea?