Mt Vernon Exhaust Leak

[robsmt]

I have a Mt Vernon insert and removed my exhaust vent to clean and replaced it installing a new gasket. On the Mt Vernon insert there are two clips that hold this assembly down to the exhaust blower. I now have a smoke leak upon startup when the box is full of smoke. The leak appears to be coming from between the plates (vent pipe assembly to blower). As stated, I installed a new gasket so I can't figure out how this is now leaking unless it always did and I never noticed it. However, I don't think there should be any smoke leaking. Anyone have this problem or suggestions for remedying the problem?

Thanks

 

[humpin iron]

red rtv silicone, not alot, on each side of the gasket. Get it at a auto parts store or hardware store