I don't see the mast bearing for pre-46 on Carters site, but if you got something like this, that is the bearing not a 'race', you don't buy an assemble-it-yourself bearing .... if you have something much different you'll need to link a picture for anyone to know what's happening

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