I have a seige engineering set as well, but have never had a single problem. I have the 5 gallon tank and the Vi-Air compressor (200psi). I bought the 2 horn trumpet (they are huge so had to mount where my spare used to be, but sound awesome, real deep, more like semi to me than some of those real high pitched train horns. they require alot of air pressure though, need to have at least 140psi in my tank to get a decent sound out of them.