1929 Majestic Model 90-B.....How?

[Cruiseomatic]

Is there something like a sams for these like Televisions?
This thing has blocks of tar in it and I'd really like to restore it. It still works like it is, Matter of fact its running now and just going right along. But IT is 80 years old, The caps and so forth were not built to last this long. Only thing that bugs me is the constant static in the audio when its on a station. If its not on a station it is dead quiet. At full volume she does Oscillate. Found that one out by accident.
Anyone have some Ideas? I also have a '59 Buick radio I'd love to get going again.

Thanks.

BTW,I'm shooting for a day next week I will get the Hoffman back....But don't know if it can still be fired up. We do know that it will not have a picture for a while. (Bad pic tube).