I say good choice, keep it original. It would be nice to recreate that frame for future builds. That style just seems solid.
I tried to fix all the bent fins then they were painted a semi-gloss black
I would bet mor than likely you have metal shaving build up interfering with the ignition and lighting coil, from P.O. not changing the oil frequently. Some tips I can offer on that after you remove...
I have about 50 restored bmx bikes, all between 1976-82.. Im kinda blowing out my collections
What did you do on the radiators? I do like the gold zinc plating used on the axle along with everything else.