[leftwing25]

A number of resistors seem out of whack..if I'm reading the schematics (and the band color guides) correctly.

Some of them are tiny little b#$@#$%s that run between pins I don't know how to even test them let alone replace them.

Hi, Tgace.  I have a 49-500 that has those little boogers in the tube sockets.  If you can determine that with the tube out of the socket that there is no continuity between the leads, you can test them in place.  That's how I tested some of them in my chassis.  Seemed to work.  Still don't know if there is some reason they need to be down in the sockets except to save space.  Replacing them looks like it could be a pita for sure.  Ed