CP. NO MATTER HOW STABLE YOUR PLANE IS,, "YOU" STILL HAVE TO FLY IT!!! ALL THE THINGS THAT ARE SUGGESTED HERE, ARE TO HELP YOU FLY, NOT MAKE IT FLY ITSELF.. BUILDING IT "LIGHTER" ,WILL HAVE MORE BENEFIT THAN DIHEDRAL.. IF YOU FEEL THAT DIHEDRAL WILL LOWER AIRLERON EFFECTIVENESS,MAKE THEM LARGER AND MORE THROW.. RD