Still unable to get my 1970 t120r started after build. It was in an unknown state from an owner who died while working on it, 5-6 years ago. Have put in Boyer ignition(am getting good spark at the spark plugs), cleaned the carbs, new rings, honed the cylinders, valves and valve guides, ground the valve seats. I believe the valves and timing are set correctly. However, When I kick start it, I'm getting blowback through the carb. Also, I'm not reading any compression.