Gluing replacement screen, need help

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http://forum.xda-developers.com – Hey guys, My last sk17i screen started to unglue on the bottom, under the back button, so I decided to glue it back, the the glue got under the capasitive sensor and my back button stopped working. I brought another screen but it didnt come with adhesive that glued the screen to the case, so I got one from eBay that is 1mm thick. It unglued on the button again so I when and got 3 diferent kinds of adhesives. The problem is that when it glues on the bottom it unglues on the top and the side of the case doesnt seem to touch the adhesive either...is there a special kind of glue or another edh (HowTos)