I installed 4 into 2 exhausts on my 1978 Honda cb750k and seems like I am having problems with it running too rich now, canĀ“t accelerate in top gears without bogging down. Does this sound like a re-jet issue or timing, or setting the jets I have to lean out the top end? I am not sure what to do if it was the latter, what jets on the carb do I need to adjust and does it fall into the 1+1/2 turns out rule?