Serving Dynex Dux for chafe protection

[calderp]

I recently set up my stanchions and lifelines with Dynex Dux and have been having some chafe problems that I'm having trouble sorting out. I have only three stanchions per side (28' boat) and the slight angle puts the Dux up against the inside of the eyes. It has been chafing here and I haven't found a solution yet.
First I tried to serve it with a waxed whipping twine but I found that the Dux is so slippery that the twine would just push away, leaving the line bare at the point of contact. Then I tried rigging tape and had the same issue, with the tape quickly abrading at the point of contact. I thought a tarred twine might have more grip but I haven't been able to get my hands on any. I'm currently sailing up the East coast so I can't mail-order anything.
Any tips on serving this stuff, or otherwise giving it hearty chafe protection that won't slide along the line? The line is 5mm dux thru an apprx. 3/8" eye so I haven't got a lot of space to work with.

On a related note, what are preferred techniques for longer lengths of less aggressive chafe protection? I would like to add something where I am seeing some slow abrasion from the genoa sheets on my Dux shrouds.