Here's one for you. I've been using new Gargraves for the the past two years. I also have some that my father bought. It's more than 50 years old. As the guys say, old stuff can be pretty rigid. I left it in the rain for 30 minutes. It bent like it was brand new. Looks perfect.
Ross switches were made specifically to mate with Gargraves track. Give Steve a call and he will get them out to you quickly.
Paolo, do you suggest a brand name for conductive epoxy filler? Sounds like a great idea.
Jerry