I was riding my 03 yz450 and I noticed the front brake feeling odd. It would stick and then pull far back. I checked the fluid level and discovered that its way low, and I mean way low like not even there. I dont even know how it was working, compressed air brakes? Anyway, I ckecked everthing I dont see a leak, I looked at the line, calipers, everything I see no leak. Ill top it off and bleed it and check it again, it just seems strange. Does anyone know of common leak points on this bike that I should know about, or good methods of tracking the leak down? thanks.