Hey guys, I bought a 95' RMX (I know, it's a two stroke). Well, I just got the bike back from a rebuild on friday. The bike seized so I had a new topend done and the mechanic said the rotor was destroyed and the power valves were shot. So, $700 later, I am breaking the bike in on saturday and it starts making a noise. The noise sounds like a rolling low knocking noise coming from the clutch side of the engine. The funny thing is, it completey stops when I pull the clutch in. Any ideas?