Emerson 659B: No FM Reception

[YamahaFreak]

I got this nice early AM/FM set at a small local swap meet. It's from 1949 I think, and the earliest set with the FM band I've seen. The AM works great, but there's absolutely no response on the FM side. Most of the tubes tested bad, so I'll replace them to see if it makes a difference. The radio displays quite well, and I was told it was reworked and recapped as well. Anyone know the solution to my FM not being there? Someone suggested replacing the 19T8 tube (part of the FM section).