Kiswa, I've got alot left to play with, but dual rates are a necessity with the SE. That's gonna BE your learning curve. Expo will help alot too. Mixing flaps and elevator is nice too. It didn't make as big a difference as it did on other airplanes, but it will tighten your loops and help to prevent snapping out. If you found a loose screw (that's a loose nut behind the keyboard) I'd be tempted to not worry at all. When you shop for a new radio, try to maximise the mixes and controls. Even if you don't know what they're for now, you will later!

I need a new radio too. If you can talk her into it, be sure to let me know what method you use. Pity, guilt, etc.