Hi,

I have experienced similar problems with the binding when using the push rods provided in the Sig kits(all amazing kits, need a tad of improvement in the accessories though ). Although I have experienced these problems on a Sig Somethin' Extra, I presume that the push rods and nyrod tubes are of the same type on the LT-40 as well. On the SE, the throttle cable would simply refuse to go into the tubing that was meant to be used with it, so I headed for the hobby shop and got some music wire (3 lengths, 36" each, total spent: ~ $2) that was just slightly smaller than the diameter of the cable. Then I just cut and bent it where required and now it works quiet well without any binding. You could try and use the same method, there shouldn't be any significant slop in the linkage(if any). The Nyrod push rods in Sig kits seem to have a rather uncomplimentary reputation due to the temperature sensitivity that they exhibit(expansion and contraction). You shouldn't have any problems with attachment since the LT-40 uses screw-lock connectors on throttle and nose gear controls. Hope this helps.

My $.02 of advice.

Planes:

LT-40
Sig Somethin' Extra
GP PT-40