Petcock Trouble!@

Tonight I put the old (but cleaned out) petcocks back on the bike, installed the tank and put about a gallon of fuel in her. It looked like a sprinkler under there! The right petcock was leaking from all over the place, but where the petcock attached to the tank itself was completely dry but I definitely have a bad petcock. The ones on it now are some aftermarket that are all pitted and in terrible shape.