I brought the unit into the shop, will not start without quick start. Put in new plugs. You can see condition of one plug. No doubt it is using oil. Swapped out carburetor and fuel pump, no difference. Pulled top off checked gap on coils good. Intake gaskets seem okay.
I am guessing valves not closing, but the plug on one side didn't look bad. Why wouldn't it start on that cyclinder? Should I do leak test or just pull one of the heads.