Hi; I would like to know what is so special about Perry Carburetors? I bought a K&B.61 engine the other day that has a Perry carb. on it. It looks like it is made out of black plastic and has a very short NV. I also have a K&B .61 with a K&B carb, its made out of alum. and has a nice long NV. So is the Perry better than a factory carb.? Veco