If you are going to use pivot point hinges, I would just trim the old hinges and put some matching white covering over top.Don't worry about removing them nobody will know the difference. Then drill your hole next to the old hing about 1/4 inch to the inside (fuse side).

These types of hinges are tricky. They must be kept straight and in perfect line. I would dry fit them a couple of times to make certain they are in alignment and not binding. You may also need to trim out some balsa so they fit into the joint a bit to reduce the gap. Failing to do this and a couple of dry tests to get it right and you will be less than happy with the results. You will also need to use 100 grit sandpaper to roughen up the hinge barbs. You don't want to be agressive with the sandpaper. Just twist the hinge in it a couple times to rough it up so the epoxy will bond to it better.

Use 30 minute epoxy. Allows for good working time. Use vasoline and not oil. The Vasoline will stay where you put it. I also mix in some milled fiberglass. I apply the epoxy mix to a tooth pic and coat the hinge hole well. Then I apply epoxy to the hinge and insert.

Critical...Don't be in a hurry. Only do one side at a time, meaning all the hinges on one wing first, then come back and glue the Aileron side on the same wing. Only mix enough epoxy to do one wing at a time since you haven't done this before and take your time to get it right. Make certain you have dry fit the parts to get the alignment and fit to your liking...I use masking tape to hold the aileron to the wing in place while it dries.

Hope this helps...

LLD