Hope you found the gear that you wanted at Graphtech. Since you have already moved the CA hinges up and down the trailing edge of the aileron mounting edge, and there isn't anymore room to cut another slot anywhere on the aileron or edge, then Robarts would be the best bet. Another thing you could do, is to replace the aileron and this way you have new wood. The edge on the wing may not have the space. There is usually a lot of edge there to install the CA hinges. All you need is 3 and they don't have to be close to the other previous hinges. Just spaced out enough to carry the stresses and load. Thicker CA doesn't work.
Maybe if you are having difficulty with the landings, maybe there is a more experienced guy at your field that could help you with landing techniques? It is very important to learn how to glide the plane to the ground. Guys that I have helped even getting into gas, didn't have good primary instruction and don't know how to glide the plane. The best glide is when the wing cord is parallel to the ground/horizon, since you live in hilly land. To practice this, take the plane several hundred to a thousand feet high, engine to idle, wings level and parallel to the horizon. During turns, the wing dumps lift, so keep your banks to no more then 20 degrees. This little exercise will help your basic piloting skills. When the plane is on final, you want a low angle steady descent. All you want to see is the leading edge of the wing coming down final. If you see the top of the wing, you are coming in too fast, if you see the bottom of the wing, you are getting too slow, or are too high to make the landing. Once you get it into the profile of a proper glide, don't touch it, other then to keep it level and coming on proper glide slope to touch down. Your flight controls may have too much throw for your abilities too and make it more difficult for the landing mode.