I have a 94 vmax that has always bogged midrange loading you would say it is piped so I made surethe jetting is correct the belt is new with the right amount of freeplay. now the midrange bog disappeared but the thing was only pulling 7000 rpm I thought was running rich cause it was so warm out. I ran out of gas, whn I restarted the snowmobile it was running on one cylinder. I limped it home, pulled the spark plugs. One spark plug had no gap in it due to impact. Piston is okay, found a tiny metal, looks like a ball bearing, stuck in the spark plug. I assume it's the reason for spark plug damage. i regapped the spark plug, the engine runs on two cylinders, but the cylinder with the plug damage appears to be pushing oil out the exhaust right at the manifold. Is this ball bearing looking part out of the oil injection? I'm guessing the overoiling of this cylinder is the high end bog issue. Am I on the right track? The other cylinder spark plug is nice chocolate brown like it should be. Any ideas?