Opjose,

the pushrod run horn-to-horn on the ailerons is just 90mm, may be less when you factor in the larger spring-steel clevises I am planning to use. I think I can get away with full threaded rods there, will sheet them with silicon tubing to prevent corrosion and scratching the monokote in storage. For the rudder and elevator I am using aluminium servo horns. There I am thinking of just using a z-bend on a standard one side threaded pushrod as the servo horn has sufficient material to be drilled out.

With the engine, there are hardwood spacers for the blindnuts installed behing and I have fibreglassed over. To get them out, a lot of work will be needed with the dremel. I want to retail the stock holes so that I can use either a 91 /110 4C or the DLE later. Hence I has asking whether I should sand the 120 mount just where there is interference with the dle casting to fit the engine in that mount

Ameyam