Another thing that causes traction tire problems is excessive oil or any petroleum product residue on the tracks. Smoke fluid can accumulate on the tracks, especially if you run your trains with high smoke output.
Also, what do you use to clean your tracks? If using Goo Gone, you need to wipe the tracks off with denatured alcohol as Goo Gone will eat away at the tires.
I know Goo Gone works great but it leaves a residue that needs to be removed.
