That may have something to do with it. While I don't feel our lower level is too humid, at times it possibly might be.
We do have infloor heat, in addition to overhead vents for the furnace in our lower level, and the infloor runs all year long to keep our temp about 69. Also with the air running in the summer, our lower level is air conditioned as well as heated, sometimes at the same time with the open stairway to the upstairs.
I've rarely noticed a skid, but always on softer rolled shots, and won't see it for a month or two, then see it a couple times in a couple days, then goes away again.
So, while thought it could have been caused by the Arimith ball cleaner, it now looks as though possibly chalk, or humidity. Our lower level is extremely comfortable with its infloor heat.
Thanks for all the suggestions.