ShortScale.org

Yeah, I just reassembled my jack plate and plugged into the Valve Jnr and it does still buzz / hum a bit but I think that's at the aforementioned amp problem. Same hum when no guitar plugged in. So, a bunch of contact cleaner did the trick. With a little help from my friend Baron Wiggle dé Wiggle.

Also, the Valve Jnr sounds great. Def not getting a modern practice amp anytime soon.

All this talk of IPA in the pots - is this “pour beer on it” in action?

My amps prefer a crisp saison.

DeoxIT D5 (specifically D5S-6) should be fine to use on pots. DeoxIT seem to think so, though some guys on guitar forums sometimes say it's still bad. It's a lubricating contact cleaner; most aren't and that tends to be the problem with using them on pots as they will dry out any grease or lube in the pot, which can lead to damage or seizing up down the line.
I actually just gave the master volume on my '70s Bassman Ten a couple shots of deoxIT D5 before I read this thread the first time earlier today. Now I only have to worry about those slightly-iffy-looking 50-year-old RCA preamp tubes, the 2-prong mains and the deathcap. We're slowly getting there.

Did not find any dead mice in it, and the tolex under the chassis straps looked so clean it made me laugh. Sounds louder and better than I remember since cleaning the vol pot too, I wonder if I was even truly on the dial where I thought I was before. So, net positive.