Zenith Color Roundie Alignment with B&K 415

[old_tv_nut]

"Out of curiosity I adjusted L1 (41.25mc trap) and L3 (39.75 trap) to their max and I was able to get the below curve, all other coils and transformers I left as-is. It seems like if I had a bit more adjustment in the coils I could get the response curve to dip between the 39.75mc and 41.25mc markers."

When you say dip do you mean lower on the scope screen (actually an increase in signal)? Matching that blip is not important. What is important is that the response at
42.75 and 45.0 are equal, 45.75 is at 50%, 39.75 is practically zero (high on the scope trace) and 41.24 is high on the trace, at -24 dB or greater, which means less than 6% of the peak response.