Really need so words of wisdom. Changed oil last weekend before big trail ride. I started the bike this week to run some stable through the carbs and checked my oil. No oil on the dipstick. Added oil, ran bike and checked oil again. Still no oil on dipstick. Repeated process till I added about one quart and noticed oil was about one inch below oil fill plug. I drained oil and noticed it was dark gray. I had the bike in deep water over the weekend so thought maybe water got in the oil. I carefully drained the oil, changed the filter, and put in new oil. Ran the bike and still no oil on dipstick. I loosened the "oil pressure" bolt and nothing came out. I took the bolt completely ount and a little oil would occasionally squirt out. To me it sounds like one or both of my oil pumps died. What happened, is this a known problem. The bike has very little use and has been well maintained. I'm going to open the case tomorrow and start inspecting. I'm afraid I might find dammage. Anything I should check or do before splitting the case. I really don't want to do it but don't see any other option. Mostly just want to know if this has happened to anyone else and what caused the problem.