Failure to get good video and sound together is either because the IF stages are misaligned, or if it's an intercarrier set like 99.9999% of the TVs made after 1950 or so, the sound IF section's misaligned.
I need to make a good accurate 4.5mhz generator to deal with the latter
My big military surplus unit won't go much below 10hz, though it seriously rocks for doing FM sets. Combined with my HP counter, after a 6 hour warmup (!), you get 10.4 on the button, and stable. AN/USM-44A - heavy beast but useful...
Still need a 4.5generator though. Something stable and adjustable output. *sigh*