actually, i didn't like the method that central hobbies shows. a short piece of tube connected to the 2 long rods which pass through the clear plastic tubes is a lot of work to set up and the rods have considerable friction in the clear tubes. i used the main tube for most of the push rod length and connected the rods towards the end of the tube. i used a wedge of balsa to spread the rods to the desired v and wrapped it with kevlar thread and CA. the joint is so hard you could drill and tap it if you wanted. just a couple of supports is plenty for the main tube and i used some of the leftover clear tubing for flush exit holes. i will eventually cut the rods and the tube to fit and install/glue the ends on. much much less friction than the CH recommended way.