I've been using cut down Balistol ( 50/50 with naphtha) for over 10 yrs. and have not experienced any collecting of gummy residue issues. That being said, I never use it straight out of the jug. Always diluted 50/50 with Naphtha. That has become my go-to for action centers and it does an excellent job. Cloth key bushings seem to work with this solution as well. And it does a remarkable job with buying time with all of those Verdi Gris action issues.
I did have one horrible experience with a failure, as the Balistol/Naphtha collided when I experiment Titebond Molding glue on a key bushing job. The bushings all fell out.
Hot Hide glue and Balistol have shown no issues over the 10 yr. period with my installations. Also as a note, Balistol claims is that it's also can be used an excellent leather conditioner.
My 2 cents....
Registered Piano Technician
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Well....let's put a check mark down for 10yrs ( and counting) with no issues using Balistol in the cut-down method with naphtha 50/50