YET ANOTHER LUBRICANT - Break Free CLP
It appears to reduce friction better than the supplied grease. This is ONLY day 3 however. . . an experiment in progress. Use SPARINGLY and shake well before using. I applied it with a foam cleaning pad to coat a thin layer to the ball ends and and ring magnets. Moving a rod by hand with one end attached to the toolhead ring magnet felt easier . . .to me anyway.
So far, no visible buildup of any kind.
Available everywhere. https://duckduckgo.com/?q=break+free+clp&t=ffsb&ia=products
I've used this product on tools,locks and handguns with excellent results.
There are, no doubt. products similar to this that probably work as well.