I've found that the so called "know it alls" are generally old club members....bascially, your average old fart. Knows all about engines,
flying, building, etc. etc. etc. These are the guys who are so tight that they could squeeze the **** out of a buffalo nickel. And with all the gist they spew out, the only plane they bring to the field is a beat up trainer that is a refugee from the scrap yard. I generally pay no heed. If I have a question, there are a number of guys in each of the clubs I belong to or, I ask the question here.

Dave...