True, there is more than one way to do this that works. Respectfully though, I'm going to disagree than the T fitting method is prone to leaks. On mine, I have a barbed 3 way fitting with the lines zip tied to it. The lines themselves will break before they will slip off of the fitting, so no leaks there. And the fill line is plugged with a fuel dot so no leaks there either. I do fuel and de-fuel through the T fitting with no difficulty whatsoever. It's a simple, robust setup with nothing to wear out or malfunction. This is on a 50cc Extra 300 so it's a pumped engine, but I've also known of guys doing it on non-pumped glow engines with the same reliable results. I haven't done that personally because I haven't had a plane since learning about the merits of the T fitting setup that needed a separate fill line, but it's been done plenty by others.