Hello I am new to woodworking and the forum. I recently had my wood floor replaced in the PC room. When the workmen came in they moved my PC desk out of the way in order to replace the flooring. The desk was slightly damaged and they glued the side back to the desk top. However when they glued it they did not realize that the top overlaps the desk side by about 1/8". Now the sliding tray for my keyboard does not operate properly. How do i unglue and they reglue the side to the desktop? Thanks for your help.