I can tell you the easiest way to fix that one is going to be send me a private message with a shipping address and I will send you a fancy new red one with the screws instead of glue. That being said you could scrape that old glue up a bit and try to make it nice and flat so it will have good contact area for the glue to adhere. I used a good CA (cyanoacrylate) glue, if you have tire glue for RC cars that will work fine too. I've messed around with several different super glue in general. You may try a good gel super glue also, it really depends on the which brand of material I used on those. I think that most all super glue has CS in it with varying amounts. As we printed more and more of these the material changed numerous times and so did the glue that was used. We finally redesigned then to eliminate the glue for that reason. Pretty sure this is the first I've seen fail because of the glue. Get me an address and I'll fix you up