One Nut

So in an attempt to fix this issue before selling my car I've got this rattle in the dash. It sounds like a cable laying on the top of the gague cluster bouncing around. This is the second time in there and I cant find any thing loose. I cant get between the A/C ducting and the bottom side of the dash and gently rapping on the dash top I cant replicate the noise. I'm thinking of pulling the dash top off but I cant find all the clips or screws and I don't want to force it.. Doe's anybody have a diagram or procedure of the dash top removal.