Got a 2012 YZ 450 with 4 hrs total on bike. I bought it new right before winter and only have two rides and two races on it. A few days ago I got the bike out and tried to start it and it wouldn't fire! At first I thought it was because it was sitting all winter so I put a heater to it and changed the plug and found oil on it. What could it be? I drained the old oil out and put new in, changed oil filter, put new gas in. Also the clutch won't engage I'm lost on what it could be?