I cleaned the head with a wire wheel and then I used some fine steel wool. I then used some acetone to clean the surface to get any oil residue off. From the link above....
Intake Manifold Gasket Installation Most Fel-Pro performance intake gaskets are designed without a metal core, to allow port trimming. Gaskets must be firmly adhered to the cylinder head to avoid possible gasket movement.
Attach intake manifold gaskets to cylinder heads with a firm-setting contact adhesive. Be sure to use it around intake and water ports. Allow it to dry thoroughly before trimming the gasket and permanently installing the manifold. However, you may temporarily install the manifold to help locate the gaskets while the adhesive is drying. This procedure is especially important on large port heads with narrow walls between ports
So it say to use contact adhesive but this is for paper gaskets. Mine is paper, metal, paper. I guess it cany hurt to use some of the spray as its tacky and will do just a fine job as an adhesive.