Valley pan?

We tried the valley pan from 440 source. We had to go back to stock pan to get the leaks to stop. We are running eddy heads and a vacuum pump too! No problems now. We run only pan..... no gaskets.

Has anyone else had trouble with 440 Source pans? i know they make one that has the heat riser blocked off but dont want to use it if folks have had issues with them.
I know Felpro has intake gaskets that have the riser blocked off, but i have heard that after time they break down from the heat.