I am currently rebuilding a 400 SB. as i was pressurizing the oil, i hooked up one of those screwdriver bits for like a drill, onto a socket onto my ratchet and started pressurizing. I then stopped and then noticed that the little bit fell out. Im thinking of unbolted the oil pan and finding it, or is it really worth looking for? Im thinking it fell somewhere in the oil pan, i drained the oil but couldn't find it w/ a magnet. What is anyones suggestion? Im thinking of taking the risk of leavin it in there, but if it gets in the crank im screwed. please, im only 16 help me, Phill S.