need more information....can you show a drawing of the build and what materials your using
. i build balsa kit and bash them to add ailerons. the less dyhedrial the better the rolls
...and the harder to control but thats to be expected.
i'v modified several 3channel sig kits to have ailerons and a aerocraft skimmer 600 sail plane.
of the 2 sig breezyday parkflyers i find the red one with more dyhedrial easyer to fly and very aerobatic. the yellow one fly fast and and reacts quicker to fly. so share a little more info on your build and folks here can help i'm sure.