I have an Onan Genset. The unit ran well all summer but the last time we camped the unit surged and sounded like it wanted to go dead. I shut it down and it restarted and ran fine. When I returned home it has gotten progressively worse only running a few munites before it starts hunting and surging uncontrollably. I took the carb apart and cleaned it and I noticed that the intake tub had some type of gasket that was chipping away. I did not separate the tub in half to check the gasket. Could a leak of vacumm cause this? I also noticed there was also an oil leak at two of the bolts on the head at the center of the head. Could this cause the governor to hunt?