just take some tape and put the stickside against each though the lenth that you are going to use. leave about 1/4 inch on each side. now put it through the opening, seal it on top on one surface and than put to the other sealing surface and seal it down. kind of hard to explain. but u end up with sticking on the horizonal on the top side and sticking to the elevator on the bottom side. I use packaging tape clear and than paint with spray white afterward. I suppose you can look for tape that's close to your color and do the same. one more thing, put the elevator in one of it's throws so it doesn't bind when done.