With new prop, fuel system repair and maintenance all caught up, motor has never run better. However, I still have a few questions. After rebuilding the carbs, the rpm fluctuates slightly (200 rpm) at idle. What can cause this? <br /><br />Also, would like to change out my 703 control with one of the flush mounted versions. I have the 10 pin harness. I know I will need the ignition switch with the choke and alarm, but how about my wiring? Am I good to go?