Nope not the rectifiers . The problem has since settled back into the left motor only. This is the weirdest thing i have seen in my life. Switched the fuel pumps and it stays on the left side so i think its safe to assume that they are ok. Pulled the baffle, inspected all that. Pulled the lines from the baffle, all the way to the fuel pumps...no problems. Today we will be pulling everything (and I mean everything) from the fuel pump on back. Probably gonna re do the carbs again, since i wasnt there to witness what all my buddy/co-owner and his people did. At that point i will have effectivley ruled out ALL fuel related parts that can fail. If by chance it doesnt get better, i guess i have to start thinking either electrical (which i have done rectifiers, plug wires, connections, etc) or God forbid ...gulp...compression, right? I mean, hell, theres nothing else that can cause this kinda stuff right?