General Radio Model 1001A need Advice

I just purchased this from another forum and the Member declared that it worked well.

Found out to the contrary. :evil:

Any one worked on the Frequency band selector?
Its not working, I can get the lowest band to work, but the others show no life accept intermittently when switching bands.
I was thinking that either the wiring is broken or switch contacts.
Any Ideas on fixing?
Modulation works on one band as previously stated.

I have not disassembled Yet.