what does the "rocking motion of the distributor" mean? is the distributor loose or are you referring to the fact it turns? the turning is the advance mechanisms .... if it loses power at higher RPM I'd suspect a timing problem, maybe the centrifugal advance is sticky or the vacuum advance is weak

Bill

Moved over to the Passing Lane

"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