I am constructing a layout using 3 rail, O gauge tubular track, and have installed both rubber O gauge railroad ties and wooden ones that I fabricated myself. Thought I had plenty of both, but I just ran out. Can't seem to find a supplier for the rubber ties. I purchased a bag of 250 of them from Amazon about 2 months ago, but now they and other suppliers seem to be out of stock. Any advice on where to get them? 3R Plastics does not seem to produce them any longer. If not available, I'll just make more wooden ones, but the rubber ones work better in some locations on the layout.
Thanks,
Michael