[LASJayhawk]

This place says they have them as well.
http://www.vacuumtubes.net/Prices%20F123...QV04-7.htm

But unless the filament is burned out, or the tube is missing I kinda doubt it is the problem. I have had more issues with bad silver micas in the front end. I have also had problems with the 7F8 converter tube as well. They will work fine on AM and SW, but won't oscillate at the frequencies required by FM if weak.