also lots of smoke on start-up. can smell the coolant in it. quad is running strong, however. no power loss or overheating. Is it definately the head gasket? could any seals in the water pump be shot causing this as well? when i did my build I believe I used Cometic gaskets. Are they junk? Is a gasket a gasket or should i get a specific brand? I wanna order parts asap but i dont want to order junk.