I spent the better part of yesterday and today replacing my stock TBI intake manifold with a new Edelbrock Performer. I used the Fel-pro gasket set for the sides and various components and used some permatex (I think) glue for the front and rear...fired it up and it leaks from the back. Should I be using a different sealant or gasket set? I am going to be pulling it and re-sealing it next weekend so I figured I would get some better advice on this! The leak (coolant) is coming from the back corner. Thanks in advance for any and all help.