Get some good silver solder and flux and a 240W soldering iron. They'll improve.

I love those little nylon clips for the 90º bend. "Z" bends used to give me fits.

Never use a screw clevis on both ends of a control rod. We had a Quickie 500 that went into the parking lot and determined that was the cause. The rod vibrated out of the clevis brecause it could turn. Real "turnbuckles" have opposite threads on the ends to prevent this. Make sure at least one end is anchored with a bend or fixed with solder.

I still use the occasional EZ-Connector on the throttle. Once I'm happy with the install and the engine is broken in and happy I'll replave it with a permanent connector. For whatever reason, I frequently have "issues" with binding on my throttle rods. Maybe because I swap engines around.

The "Servo Saver" for a nose wheel is a pretty clever use of a pair of EZ's. I have that on my Contender 60 as a nose wheel takes a pounding at our grass/dirt field and I worry about the rudder servo.