This a good one. I'm doing the oil pipe o-ring job today and I appear to be missing the fastener that goes through the rear-most pipe coming off the main gallery supply pipe where it attaches to the engine. It's the pipe that looks it has a banjo type fitting on the end of it. Does anybody know what part of the engine this pipe supplys with oil and if you can substitute a standard bolt and what size it needs to be and if not, what the Yamaha part # is because it's not pictured with the main gallery supply pipe on the parts breakdown that I have access to. It wasn't in the oil pan nor was one of the oil pump mounting bolts that was missing.:ummm: Thanks.