Hi Bob,
The LGB pickup sliders are now sold by Massoth; exactly the same product just in a new packet! I recently had some problems with my geeps getting stuck in the frogs of my large radius points as the sliders were slipping in and getting caught. I swapped them out for some of the Massoth ones as they're a direct replacement, and it completely sorted the problem. It's a neat trick that saves having to bend and twist the USAT sliders.
All the best,
Gavin