Does it throught the carb only once in a while if the RPM's get to a certain point. But because of the way it is running so poorly, I don't like to bring the RPM's High untill its fixed.
at idle its OK
at 1000-1500rpm it starts to backfire out the exhaust
1500-2500 it is nothing but backfiring out the exhaust with a bit of a miss on the engine once in a while. it will start to back fire out the carb here too, but only once for every 20 exhaust backfires at least