I recently bought a 99 blaster that appears to be leaking oil were the head an jug meet , also with small revs out of gear i hear smoke pops and smoke comes out of somewere close to there , it sounds like a 4 stroke with bad valves although it rides fine i tried to tighten the bolts down they seem almost stripped i really didnt spend much time so ill have to look further into it wondering if anyone has had anything similar happen that could push me down the right path before i pull out all the stops , motor appears all stock , carb head echaust ect thanks , reply here or email ixiimpulseixi@gmail.com thanks a ton guys