[old_tv_nut]

Originally Posted by MRX37

Given I had to adjust pretty much EVERY tuning slug in the IF section because I had to replace 2 that crumbled...

But, which one would be the cause? L304? The 4.5 trap? Something in the audio section?

I could not, would not, make a guess. The real answer is to get the necessary test gear and do it right.

However, if you promise not to blame anyone but yourself if it gets worse, you could try more very slow random adjustments, and see if there's one that strongly affects the ringing.

Edit: not anything in the audio section.