First off lets forget the myth drag pipes take lots more fuel!!!!!!!! Two years ago with my GRR 421 cub setup on gas I was running 270 main jets in Mikuni 39.5mm TMX's. This was in 300 ft drags. Also I was using GRR pipes. I ran a 4.002 in 300' with a 20 shot at Little Sandy with this setup. Shee was flyin' Andy's pipes take less fuel than others, much less. Making power is about efficiency not stuffing as much fuel in as you can. AS far as Andy being closed, I believe that is pretty much true. He will only do work for a few of the chosen ones. I can't really speak for Andy, but I think he is just burnt out with this stuff (he has been building motors a looooooooong time).......and now is just the time to move on.