Just went through a battery flying around the office (quite an obstacle course) and it's flying really well now, just using the trim adjustment. Don't think I need to mess with the flaps--though I do want to get rid of the spring in the throttle stick, it's really difficult to keep it consistent.

What difference in flight characteristics does removing the lower wing give you? I bought this for something to fly around the office, so slow and manuverable are the goals--does a single wing add to that or make it more 'sporty'?