RCA CTC-16XH Smearing Issue

[Username1]

Q. - If you disconnect the signal to antenna do you get snow
on the screen? w/ or wo color? and do you get snow on sound?
if no, then you know where you need to go also. if yes then
I'm not sure I would go to AGC right now.
R56 that 22ohm job, do you have a good unbroken connection
from the tube pin through the socket, through the PC Foil to
the resistor wire 100%? You probably need to poke around
everything in the detector area, DC Scope readings on both
sides of the detector? do they seem right? Something out
of place in the signal? And yes use a real analog scope.
and stop turning coils, you could be tuning for that
streaking and making it worse. Never do that to a
tv or radio with a problem.