ORIGINAL: David Gibbs

I am just starting builidng a second one (cos I really like how they fly), and am going to replace the provided rudder with a foam/balsa sheeted one, put in a new tail post extending past the back of fuz, bevel the edges of both, and hinge it the proven way (I tend to use Hayes hinges) where there is as little as possible scope for movement. I guess the counterbalance will need to be carved from balsa -- and given it is the Impact scheme I may need to do some paint matching and air brushing! Other than the painting it should be very straightforward.
I may also (once I am set up to do it the way above) have a go at trimming the front of the provided rudder (the round, glass section at the hinge line) and replacing it with a balsa leading edge as suggested above -- it is good idea, but I would like to compare relative weights.