Ok, the first pic is of the LE flap. It is a basic bent wire linkage that extents approximately 3" into the LE flap. It has a brass "flag" soldered to the rod for the ball link to connect to, then a 4-40 all thread rod (or bolt) that connects to a clevis to the servo arm. The flap has a 1mm step that the stops the flap from being pushed up past zero and also acts as a stop for the servo to keep a minor load on the flap. Secure no play is key.

I may also install a locking pin via golden rod wire at the root of the LE flap that slides into the flap and keeps it from movement. It may be on a separate servo or the same flap servo. ??

The other pic is of the aileron/flaperon. Same idea as the LE flap.

The trick to make this group of servos work together is the radio I have. The JR 9303. Basically, the radio has to be in Flaperon mode that control two separate aileron servos,that are on separate channels, not Y-connected, then you mix another channel in as the slave for the LE flaps.

This is what works for me and the radio I have. It took a week of reading the flaperon section, mixing section and mocking up servos and mixes and switches. The mixing is unlimited.

Hope this helps.

Steve