ok i took the front part of the head off (the part that holds the sparkplug) everything in there is smooth except the signs of normal moving parts ware, still walls are smooth to touch even on ware marks. the piston moves freely w/ hardly any resistance. So I guess it ok? Like I said before i just dont trust the oilier, How do i go abouts in just mixing the gas? What ratio do i Use, 50:1? do i need to do anything to the oilier unit to deactivate it? If i were to remove it there would be a big hole in the gearbox. TY for any responses