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I has been explained to me that if you’re off on the value, it shortens the point life, as Joe has stated. You can tell if the value is high or low if it the pitting is going to, or away from, the ground contact. I don’t remember which. Do to the limited use our motors get this could take years to determine. It doesn’t affect the spark. It has also been explained to me that the correct value is determined by the wire. Not just the wire in the coil, but the length of the wire from the coil to the points, from the condenser to the points, and length of the plug wire(s). This would seem to explained why ignitions using the same coils use a different condenser. So when swapping ignition parts around just shoot for something between .1 & .3 mf, which what is most commonly found in our motors. This advice was given to me by someone I consider knowledgeable in this stuff, which I’m not. I have followed it for years. Tubs
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.