After 4000-5000 180-degree twists, with lube and clean cycles every couple of hundred twists, mine wasn't getting any smoother, so I finally tried the teflon tape as recommended elsewhere, and it works.
The twisty finally feels like it ought to, although I suspect that the tape will need replacement with each battery.
The twisty finally feels like it ought to, although I suspect that the tape will need replacement with each battery.