If you are using the plastic pushrod (Nyrod, etc.), they suck. They will change a lot with temp and cause you to retrim all the time.

Wrong, John. Perhaps you missed my post where I stated that I have actually measured Golden Rods (Sullivan brand name) between 200 and 32 degrees. The total difference in length of a 18" section was less than 1/32". That will not make a noticable trim change on most sport planes. I can't peak for Nyrods. When I use plastic tube-in-a-tube, I always use Golden Rods.

Properly installed, Golden Rods are a reliable control linkage.

Dr.1