I've been in the trade since 1972. I guess the best advice I can give you is to not hesitate to admit you don't know it all. I recall when I first started out I was a "know it all", and I made my share of bone-headed moves. Now that I have the experience to really have seen it all (allright, only most of it), I realize just how little I did know way back when I thought I knew it all.
Read the instructions, ask questions, consult with the engineers, and listen to the old dogs. Then make up your own mind about what to do.
Our trade requires us to constantly upgrade our knowledge base. Never pass up the opportunity to gain knowledge. There is no possibility of becoming too knowledgable about a subject, only mis-informed.
