Well, I tried the silicone and it held for a while before it wouldn't stick anymore. The nylon ring that the lead goes into is that real smooth to-the-touch stuff and I don't think anything will stick to it for very long. What do you guys think about pulling the lead out of the nylon, drilling a hole through the nylon housing at a perpendicular angle to the hole that the lead goes in to, and then tapping the hole for a set screw? Then I can put the lead back in place and tighten the set screw until the lead is firmly secured? Thoughts?