Thanks for all the advice,

I am not yet bored with the LT-40, and I was thinking that it would be nice to be able to switch wings and make it more sporty and switch back to let it be used as the club trainer (next year).

So, if I modify the flight controls, how would that affect the old wing?

Also, where would you find instructions on how to build flight control surfaces? I think I have the tools to do almost anything, but I assume they are more than just flat panels of balsa. Or are they? Or perhaps someone sells a kit with them?

THanks again,

GB