out of nowhere one day I go to start it and it runs like shit, I did a leak test it held, cleaned the carbs twice, did a compression test(both about 117). what its doing is smoking alot, the plugs are oily, even has oil on the mufler tips. the mains are 310, clip middle, 27.5 pilot. the thing that drives me crazy is when I parked it there was no issues with its operation. I mixed 93 octane with about 10oz of klotz. the freakin exaust doesnt smell like klotz should.