STBD wing is constructed the same way as the port wing. When I came to fit the STBD Flap to the wing, I found it did not fit, It is too long. The fix was to remove the outboard hinge from the flap and to dig out the foam so the new hinge could be fitted. All wet well. Now it fits OK. I have also fitted trucking in each wing ready for a possible fit of wing lights and strobe. A stall Warner is also fitted to the STBD Wing