I encountered the same thing Wedge. I picked up my Valley plate used at a swap meet. it liked a good 1/4 before touching the head. I just ran a bead of sealer, let it dry, ran another on top of it. and bolted the clean head down while the sealer was a little tacky..

[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]