Gary,
it seems that most of the planes these days use peel ply for the hinging, it used to be kevlar but it's a pain to work with, i have a skymaster VJ2M and it's all done with peel ply, i have seen the hinging on an Ultra Bandit, again, peel ply. i have just made a set of parts for a new plane and used it for the hinges for the first time and had much more sucess than i did with kevlar.

Rich.