Mike,

You are right about that! If you use kevlar you should inspect it occasionally as it is subject to fraying. I have both wire and kevlar pull/pull systems. My wire system is about 12 years old and still in good shape. My kevlar system has been restrung once, after about 3 years of use, due to fraying at the fuselage exit. Good systems, both of them, but they all need periodic inspections.

Have fun!

Bedford