What is the best way to bottom hinge flaps using Robart hingeponts ? It is very difficult to drill the hole right at the bottom edge of the wing T/E at the correct angle for a Robart hingepoint. After some experimenting I find that most times I ended up having the flap too low or too high even tho I used a jig with an angle hole that sits nicely on the T/E . I am thinking of switching to C/A hinges but I am sure its not easy to make a slot right at the edge as well plus the c/a hinge tends to be stiff and the servo has to overcome additional force to maintain the flap in up position. Any suggestions? BTW its a foam core wing for EDF airplane . Tks