the vacuum advance may have picked that particular point in it's life to cash in, check it - there is also an internal mechanical [centrifugal] advance that may have gotten jiggered when you were working on the distributor
"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
