Main problem is it only runs on the lower cylinder. Can barely see weak spark if I basically hold my spark testing screwdriver to ground. Prior to this, it sheared the flywheel key about 60 seconds into my first run with it. During those 60 seconds it ran well and planed the boat. I pulled flywheel, cleaned everything, lapped flywheel to crank, torqued it back down and went to the river. Fired right up and idled fine tried to get power and it would not plane the boat. The only thing that makes sense to me is to have some of the broken woodruff key material in the points area but I cleaned those up and used a dollar bill to file the point contacts. Would like this to be reliable enough to go down river and not worrying about the return trip. Thinking coils points and condensers just to cover the whole thing unless anyone has ran into this before. Also my tilt pin broke, I replaced that with a threaded rod and double nutted it on each side. Cant see spending $50 on a new one if this sounds acceptable. Also serial number starts 18202r, from what I've gathered that makes it a 1972. Thanks for the help.