Thanks for the tip with the LED. I didnt know that. Normally, it runs much less brighter colors, But its good to know.
Initially, I ran through a full pack of tubes for just 2 connections both having 3 bends. I just could not get them to look clean. So I decided, to spend the extra mile for some additional fittings and I am glad I did. For me it was the only way to get a clean build, But I guess with more training in tube bending one could achieve this, too.