[Texasrocker]

Hello! Make sure the signal-generator you are using is "accurate". You can check it if you own a "digital tuner" type AM portable battery type radio that has tuning steps in 10 kc increments for receiving stations via "crystal controlled" tuning. Set the test radio (that has crystal controlled tuning capabilities) near your RF generator, and make sure the RF generator is actually "calibrated" for the exact frequencies you are "peaking" the tuning points on the vintage tube receiver you just restored. Make sure you get 455 KC exact ( 2nd harmonic is 910 kc) etc. Peak your IF cans first for max audio on proper exact 455 kc,. Then, set your oscillator adjustments on the "tuning condenser" for proper tracking of stations across the dial. Sometimes, vintage type RF generators are "off" on their dialscale readings, and need to be adjusted for proper accuracy. The very best way to make sure the RF gen is "spot-on",.. is by feeding its signal into either a digital type "frequency-counter"direct, or better yet, use a much less expensive hand-held type Radio with AM & Shortwave Bands "crystal-controlled" receiver that covers all the spectrum to make sure your actually injecting a "spot on" signal reference into the radio you are working on. Since your radio was working before you tried to adjust it, seems logical to me that your RF generator you are trusting is way-out of alignment itself?