Stay with the nylon rods for your throttle. It will prevent any RFI from a metal to metal contact between the engine and the throttle servo.

Actually, there is nothing wrong with nylon pushrods PROVIDED that the outer sheath is adequatly supported. Unless you live in an area where you get sudden 50 - 60 degree temperature changes I wouldn't worry about any possible trim change.

If Fadi81 was correct, how come DuBro and Sullivan sell a ton of them each year ?