There may be 2 AGC controls but I just dont remember.
One is RF AGC or AGC delay. Its the one I mentioned & only
changes the RF gain.
The other is for IF gain, look for it. It may not have both.
The IF strip also has a C-2 adjust pot. Its basically a video
output level.
You can try that too but since the set worked OK for a while
I am leaning tward small 'lytics now.
73 Zeno
LFOD !