Well i think i have a leak in my LT headers...I know the #1 primary tube is leaking and i am thinking the header gasket is too.. What are some of the symtoms this would cause.

This is what i have:
Rough Idel
Low power at launch (cant even spin the tires)
bad gas milage
smell of gas when stoped after driving

PS : Anyone know how to fix the leak in the #1 primary tube?

 

A leak will cause a rich condition.It lets air into the system,which your O2 tells the PCM it is lean.It compensates by dumping more fuel in.Get it fixed.

 

Does a rich conditions produce the symtoms i listed above or might this just one of my problems?

 

Yes,a leak will cause all those symptoms.