Been reading this post on the right size stainless lines to use. Compared to your engine and aircraft weight. One Item that was not mentioned and is very important are your line connectors that attach to your handle and attach to the aircraft lead outs. Two types are offered the center slide and the scissor. Many flyers prefer the scissor connector. I am not new to U Control and experience the loss of an aircraft due to the center slide connector. When I started U Control in the early 60s it was I think.the only line connector that was available and it came in 3 sizes. They would get weak from connecting and reconnecting your lines. And usually doom to failure. Heat shrink was developed and That has solved alot of issues. I use it and keep my handle connected to my lines. Using heat shrink. I use the scissor clips on my aircraft lead outs. And apply heat shrink using a lighter. Just a small piece in the middle of the scissor clip. AJ