[TowerTalk] which rope for element anti-vibration

[Mike Smith VE9AA]

Paul, 

My HyGain 5-el 10m (LJ-105BA or similar) yagi has what looks like black
polypropolene inside the elements.
It's pretty small..1/4" maybe?
It's held "in" by the end caps on the elements, which of course, crack and
fall off. I think I eventually lost
1 of the ropes.  
I'd probably do a "gob of silicone" or something if I was to ever redo it.

Mike VE9AA