I keep hearing this metallic clicking noise coming from my transaxle around the spot that mounts to the engine...the ticking gets more rapid if I rev the engine and goes away after a lil bit in nuetral, but comes back if I rev the engine again..NOW, I'm a retard, and I could be hearing this from the wrong spot..so could it also be a valve spring making that noise? But if it is the transaxle...whatcha thinks it could be fellers?