Here is a handy tool for installing LDS control horn into the flight surface (aileron, flap, etc.). The tool holds the control horn parallel and square to the hinge line while the adhesive cures, reducing the chance of pivot point mis-alignments.
Study the pictures carefully to determine if this tool will work for your situation. The pictures show the tool being used on a control surface that has been removed from the wing. This was done for clarity of the pictures.
Produced by Tomas Liu Studios.