Currently refitting my bathroom and the window has a metal lintel running over the top, i need to fix some plasterboard to it so its ready to be skimmed at the weekend. There isnt enough space to fit a batton so i was wondering what's the best way to fix it up? Google has people saying normal plasterboard adhesive will be fine, others saying it wont, some using Pink Grip and others using Pink Grip Dry Fix. Can anyone suggest how to do this?