You do know your mags! It does have the 3CU3 in the HV cage as I put it there myself along with the whole set of tubes. I did notice the teflon sheet so I can assume this is the later run set, date codes found on the deflection yoke and convergance yoke show Dec. 31, 1969.... DAMN THING IS ONE DAY OLDER THAN I AM! at least the yokes are anyway.
You mentioned the total auto color and its effects. I noticed this as well and is there a fix? For now its switch off but I like to have things right. My son calls it the "Brady Bunch Effect" but at 19 what doesn't he know...
I am wondering what the failure rate of the "hard to get parts" is like. Flyback physically looks good and the power xfmr has not shed any tar. The only issue I found was the conditions of the solder connections and the pincushion/deflection issues Im dealing with.
Cabinet is in my dads wood shop and we are doing a surface strip to get the decades of heavy cigarette tar off and when everything is done I will post a few pictures.

I did achieve total success with my Sylvania CL818W-2 and works like new. I forgot how good some of these sets actually looked, I'm not much of a fan of these oversaturated colored edgy lined sets of today.

Thanks a million Randy and thanks Audiokarma!

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