Hi everyone, My husband is new to the PW business and does all flat work right now. We started looking into the vent part of it and I think it is something that is taught to you not just learned mostly by trial and error. It's not like we have vents to practice on. Anyways I wouldn't think that someone in our area would be willing to teach him (although we are open to that). My husband goes to Ca (fullerton area) every other month to help his parents with some constrution to their house. I thought that someone could show him one day or two on their job while he is there so we wouldn't be any competition. If anyone is willing please email him at lamberth@cox.net. His name is Brendan. Thank You.