A few controls wouldn’t work properly. Signal would cut out and there would be a lot of crackling when turning the knobs.  It turned out to be some cracked solder joints here and there. I also had to clean up some blobs of solder previously done by me(long time ago, when I had just started messing with this stuff). Easy fix this one.

Chassis out:

Blobs of solder like this:

to something more like this:

That was done on all potentiometers and jacks.