Tonight while starting on changing my valvesprings, I started turning the bolt to compress the spring and what I thought was threading in must have been doing it's own game. Now when I try to screw the rocker bolt into the whole it goes like 3 turn and gets tight, where the other holes I can screw it in by hand till it bottoms out! I'm hoping that There's a way to fix those threads or I'm f'd without a kiss. Any advice/help I need it!