you got taken 4 a ride, u should have gone round keith's shop with some heavies and took $2700 worth of stuff until he fixed the mess for ya. I don't know where you stand on the legal side of things but maybe you could get some of the money you spent on labour back. Surely they must give you some kind of warranty on a product that costs so much??
next time i see some jock post a thread about getting a jr supercharger i will point them to this thread