You will have to flip one flap servo over so they are both laying on there same side. This is the best way, don't be tempted to use a servo reverser. The servo horns are not visible from the top, and the fact that they will both be laying with the outputshaft to the right (or both left) nobody will see.
So close it's getting exciting, isn't it!
Glad to help.
-Snuts-