I'm more than willing to answer questions numerous times. I think Zombie's reasoning is that, this question in particular can take 5 or 6 lo-o-ong paragraphs to answer adequately, and if his rate of typing is as bad as mine, we're talking 20 minutes or more to answer the question. (I know becasue I've answered it a few times already. )

CrashBurn,
I also think that your instructor should have explained what he was doing and why while tuning your engine, or you should have asked what he was doing and why.

However, if the links didn't clarify things sufficiently, please do ask and I, or someone else, will surely answer the remaining questions.
Dennis-