Have you tried SILCLEAR from Mapleshade?

I used it on tube pins and fried a circuit board on my ARC VT-100 mk2! Never again.

Using silver bearing products on tube pins, is NOT for everyone. It takes a steady hand, an ability to limit the amount applied and extreme caution. Some have no attention for detail, should completely avoid the practice and perhaps the products(altogether). They WILL cause a short, if used incorrectly, in any circuit.

Silclear from Mapleshade more or less morphed into Quicksilver Gold from Xtreme AV, the current king of contact enhancers. Cryo'd high purity silver with gold content. Cannot beat with stick.

Quicksilver is what I've been using for years and have been very satisfied. Haven't tried the Gold. Perhaps: when this container runs out. But then(I believe), if you use up a container of the stuff in less than ten years(on audio connections), you've probably applied too much.

I used the Walker Audio silver based contact enhanser for a long time and did try that by Mapleshade's product also. Goo Be Gone, which is orange based also works. But it is really Audiotop Connect 3 that think is best. This oil is the last step in Audiotop Connect Workstation that includes an acid and a base cleaner as first steps. I have found that the cleaners get nothing off gold plated contacts and so seldom bother.

Now with the High Fidelity CT-1 Ultimate cables with Stabilant 22 on them, I don't use the Audiotop on those cables.