My RV90 had a few gemlins with the electrics the first was the wiring to the points a dirty contact and the flywheel spun on the crank ,My father in law re timed it and it run bewtiful but in reverse so we had a comp to see how far anyone could ride it up the drive backwards it was hilarious . But then retimed it and it starts easy now and runs the right way . Hah you should have seen the commotion the first time i put it in gear and let the clutch out roaring backwards into the shed .