It was awhile ago when I read it, and I forget where I read it. Like Robert said his pik-up and relucter don't hit anymore and that has to make a difference. Also I heard the timing lights have a problem with the multi spark. Read that when your trying to set your (2500 or so)the light jumps all over the place,that is caused buy the plate jumping around. I set my timeing with the Snap on advance light and have no problems at all.