Sorry for all the questions but on my 79 55 eveinrude what is the knob on the control plate supposed to do? I think its the ignition friction controller? Just wondering with me fiddling with it is why after warming up now that it kinda dies now. Just wondering what it does and should I touch it, adn since I did I do I adjsut it right. Also what is the buzzer thing for, I saw the wire is loose and sometimes it buzzes, after one buzz I quit workign on the engine and tuning it up. Thanks for the help guys my manual is on the way!