Read up on all of the other threads. RV-8, 320 hours, IO360 200 hp., one blade and stop then, next try would crank. Used all the info here and once again, like many others, found starter contactor burned and pitted. Replacing both contactors. I do have one question. The airplane has EXP2 Bus system. Starter contactor has diode but master does not. Any reason they both shouldn't have a diode?