After bad (inverted!) landings I broke a couple of wing mounts where the hole for the clip is. I saw a few cars with screw mounted wings, so did the same.
Just remove the raised part with the hole from the top and drill a new hole vertically into the mount. Take care as there's not much to drill into. I then used a 4-40 screw and a cone washer from an E-Revo wing (but any suitable washer would do) to secure the wing to each mount.
It's not as easy to remove the wing as with a couple of clips, but not a big deal. It's a much firmer mounting and the weak part of the mount is removed.
