Yes. I'm building a CG Chipmunk now (with flaps). To add flaps, the ailerons are shortened and the center portion of the trailing edge is also shortened.

ricknkim, I think you're going to have to do surgery if you want to add flaps. At a minimum, you'll have to cut some of the TE away and shorten the ailerons. You'll have to use some new balsa stock to make the flaps.

For control linkages, I'd think you could either just cut the whole TE away and install torque rods per the instructions or maybe use dual flap servos. Either way, you'll have to do some cutting. While I haven't flown my Chippy yet, I don't know if I'd want to do that much in the way of modifying the wing if it's already built. Just my $.02.

Mark