My MC 21 was running on 1 cylinder, after i take caffeinejoe90 advise, my MC 21 start on 1-2 kick, but the top cylinder can't burn up all the fuel (92octane added octane booster and 2t oil). the spark plug is wet. then i find out the top cylinder have a very weak spark. i have change a new iridium spark plug and battery, but still have the same problem. if anyone know what is the problem? I'll appreciate your help. thank you