Hey Borna;

I just had an idea. Your objective is to stop the CMP Chipmunks tip-stall tendency. You can do that with washout, raised barn door ailerons, stall strips or leading edge droops. Leading edge droops are ugly, stall strips increase the stall speed and may not eliminate the tip stall until you try a lot of different configurations, washout would require a complete rebuild of the wings, and you don't have barn door ailerons.

OK try this; Cut the ailerons about 60% of the way out from the fuselage, raise the outer portion 1/8 inch (at the trailing edge) and glue it back onto the inner portion. (Reinforce the joint with a piece of music wire bent to shape and inset into the trailing edges if you think you need to.) This will create washout and be the same as raising barn door ailerons.

Easy, not bad looking and it will probably work.

Jim