My dad recently gave me a 1945 9N that he converted to 12V and electronic ignition with a one wire alternator. When I picked it up we finally got it turning over good enough to start, good fuel to carb, but could not get any fire at plugs or voltage at distributor. We ran out of time and gave up for now needed too load it up. Is the original 6V system really that problematic enough to switch over to 12 V system? I will likely use it to mow every now and then, but will not get used weekly. Mostly just want to paint it up and have it look pretty. Should I stay with conversion or go back to 6V?