[Hallicrafters] Relay Cleaning Question to all

[greg mijal]

Hello glowbugs!!!

I got a good question for you.

It's not about Hallicrafters stuff but it's close.

I got a NCX 5 very close to completion of repairs but do a have a bug.
That stinky little tr relay, which I have tuned to mechanical perfection
and de-oxed the whiz out of, still acts like it has some crud on it.
That is, sometimes it causes squiggly audio out of the receiver and loss
of RIT control.
I've tried scrubbing bubbles, tlc, deoxit and TNT but nothing seems to
really peneatrate the crud on the little ball-heads of the contacts.
Can someone recommend a procedure or products that can non-destructively
clear it out? Perhaps something like a long term soak?  I have the last
known semi operational NCX 5 tr relay in the known universe and would
just love to get the Malden, Mass Monster back on the air.
73's Greg WA7LYO
in sunny Feenix (snowed yesterday)