sympathy offered have you made sure both the vacuum and centrifugal advances are working properly? cleaned the points contact surfaces? only 100 miles in a year makes for oxidized surfaces on electrical contacts, especially in a humid climate
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
have you made sure both the vacuum and centrifugal advances are working properly?