My first question: Im debating between the Hitec Flash 5 Radio System or the Aitronics RD6000 Sport Radio System. They seem to be about the same. Which one do you guys recommend? Which one has better servos?

Also: Im totally new to RC airplanes. Ive been building my ARK kit or I should say rebuilding lol. The pushrods for the control services where incased in these guiding tubes. There was soo much resistance that I decided to just pull the whole guiding tube out and just use the control rod itself. I figured that since the pushrods are soo strong this would be ok because they definetely will not bind. On the prebuild fuselage there was just like a little tiny hole that this rod was supposed to come out. I ended up like carving a big area around it so It will move as freely as possible. I actually had to cut a pretty big piece out on the Rudder and Elevator push rod exit holes. Im shooting for smoothe as butter but Im afraid this is overkill. I've never felt normal pushrods. How strong are servos, how much resistance could they handle because there still is a little resistance on my elevator.