Hi all, new guy getting back in to flying after years away. I used to fly scratch built control line as a kid. Getting back in to it with the FT Pizza Wing desing built out of foam (cardboard came out too heavy). My setup seems a bit lacking in power but my biggest issue seems to be my elevons aren't giving me any change in yaw. They roll me nicely but no change in heading. I'm going to try a new air frame with smaller winglets but though I'd ask if anyone has any other suggestions?