Nope, I just used a heavy sewing thread. I think kevlar would be ok but it would be overkill. Once I had it all laced up and ready I just lightly went over the wrapping with thin CA to secure everything in place.
Actually the pushrods were arrow straight except for right at the head end near the servo arm where it all came together..... but that support that is holding the two pushrods up,,, yuk! It was about 1/2" lower on one side than the other,, but I fixed it.

Anyway, Im glad I could help out and pay it forward for a change...