hey guys, i have this ticking sound that seems to be coming from the head that developed a while ago. it's only noticable at idle but goes away with a little throttle. it sounds like something is knocking against something else due to vibration but i have no idea where or what it's from exactly. any ideas guys? i have ARP head studs on when i rebuilt the motor. would it make that sound because the ARP studs need to be retorqued??