So I have been trying to trace down why I have a P0411 code for insufficient flow because i need my car inspected. Apparently I have a leak in the gasket that is in between the exhaust manifold and the Catalytic Converter, and another leak on the flex pipe that connects to the EGR valve. I was thinking of taking a wire brush and cleaning up the area real good and applying furnace cement, and unsure the fix for the EGR flex pipe, but I can clearly hear a leak there also. Any recommendations of what I should do, I have used furnace cement for other car exhaust leaks, works like a charm. EGR system clears as ready, so is this a contributing factor to the P0411 code? Also note that i replaced the check valve, and the air pump supplies plenty of air. attaching a video to show the issues.