Rca ctc-5h

[old_tv_nut]

The asymmetry of the pure red is really odd. Did you do a thorough degaussing both from the front of the tube and the back (in case any of the mounting hardware is magnetized)?

If you do degauss it again, retract the edge magnets first, so that you don't bake in an opposite field in the tube.

Regarding the dynamic convergence, I found that it is critical to get the right spacing of the neck hardware (convergence coils and purity rings) - unfortunately, you may not be able to see the location of the convergence pole pieces if the internal dag covers them, and the service info doesn't give you any measurements of the proper spacing, so then you need to experiment, making a first guess based on the illustrations in the manual.