Hey, I was ajusting my valve clearence, and the exaust valve ajuster lobe for cylinder 1was stiff. So I undid the nut so the little lobe could be loose. anyway the nut fell off and went down the oil drainage hole. Would it have fallen all the way down and into the sump, I stuck a piece of wire down to try to feel the nut and I couldn't. do I need to take the sump off to get it out or can it just sit there in the sump? Thanks Vincenzo