I want to clear over some medium sized Scotchcal decals approx. 6 x 12 inches. I have a basecoat/clearcoat done with the clearcoat color sanded to 1500 grit. I have Painters Pride Multi-purpose mirror clear # 8704 with 8776 activator. What surface finish should I have under the decals? buffed out or sanded? What grit? Has anyone cleared over Scotchcal decals? Any problems?Any recommendations? Any help would be appreciated!