I just installed a weber DFEV on my EA82. I have tried permatex high tack gasket sealant and type 2b gasket sealant and the coolant still leaks under the gasket, both into the intake and on top of the engine. I was thinking of sanding(roughing both surfaces) and epoxying a small piece of aluminum sheet over the hole before putting on the gasket and the adapter. Anyone else had this problem? Any ideas or solutions?