exhaust leak

[lake71383]

Ok right after i got my big block wagon going good. The right side exhaust collector started to leak, so i pulled it apart cleaned it all up and put a new gasket in. It ran fine for a few miles and the leak came back. I did knowest when I pulled it a part it had two gasket I don't know if this make a different or not. This is my first time doing exhaust aswell Any help or tricks to get it to seal, will be greatly appreciated.

 

[lewtot184]

if the collector or head flanges are warped or bent they me need 2 gaskets to seal up.