[TV MAN]

I think we try to do too much as we age and things can be a mess at times! I believe I have the alignment in check as it tunes and plays very well. Very sensitive - except ... well, ya know there has to be something ... a beloved intermittent! It loses signal strength when it warms up, which can be "fixed" by twisting the chassis, or sometimes wiggling the RF amp tube, but not always. Oh, forget pushing things with a screwdriver handle or something. I thought I had it when I tightened screws around the tuner board,, nope. Played for several hours, put the case back on, played beautifully, sat down with a big stupid grin with a sense of accomplishment,  then went down within 10 minutes, so it's back on the bench after cleaning up some newly fragmented papers. Gonna reflow solder connections, look for cracked trace, clean tube sockets and check grounds. Maybe this is why the chassis was bent down in the middle??? Figured it was abused in shipping, but when I straightened it, the tuner shaft stopped turning correctly, and now this ... huh... kinda reminds me of a Goldstar TV with a similar problem that finally left the shop with a piece of styrofoam wedged under the chassis 

So I did get the knobs cleaned up beautifully. I dropped them in the Ultrasonic for about 20 minutes, then scrubbed with a toothbrush, then another 10 minutes.