Hook up a pair of lines to your leadouts and observe how the model hangs [like you are dangling a plumb bob].
The nose should be pointed down [past level] just a little bit. If not, then the leadouts should be moved back a little.
Too much "leadout rake" isn't good either, because the model will have the tendency to wobble [hinge] while doing loops with the model pulling too much of an angle away from it's flight path.
A penny is usually used on the outboard wing to help offset the weight of the flying lines. The last thing you want is a model that flies with the inboard wing banked towards you.
The line spacing at the handle should roughly match the spacing at the bellcrank for adequate response, but not too sensitive.
Don't forget to check the planes' CG. Wear a noose type lanyard that connects the handle to your wrist especially if you are flying around people].