Put the jug back in the refinished cabinet today, because Bruce sent me his CTC-16X chassis for some work. Worked like a champ, and I found out why RCA relegated this tube to the job of test mule- it's got a triad of dots missing in one small spot about the size of the tip of a pencil. Almost doesn't matter when viewing it at a distance, but was apparently bad enough that it was rejected. Still needs degaussed, but I'll leave that for another time since it's not in its permanent place.
Chassis was sent in because the tint control had to be at one extreme to see normal flesh tone, a tweak to one of the chroma board slugs fixed that up. Also checked out the HV production since the 6BK4 broke in shipment, it needed a tweak to get it in spec. Now rock solid at 24kv before blooming, makes a really bright picture. Horizontal cathode current looked good, so I let it be. Ready for more service!