Ding ding ding...We have a winner...er..loser! I just removed the rockers and it's the tip of the valve. I have attached a picture. I guess i'm lucky it didn't drop the valve. Looks like the head is coming off and roller rockers are going in after a new valve. Any idea what might have caused this? I don't wan't to do anything until I figure out what caused it. I don't want it to happen again.