i have5.0 roller brand new. i just bought some pro comp heads 190 intake 75 exhaust 202 160 valves, my problem is i have a eldalbrock preformer intake and it wont fit. the intake is not wide enough i can see about a 1/16 of an inch of the intake port. i put rtv across it and it runs but when i put water in it it is not sealing tight and leaking across the top of the intake. what can i do to fix this. i am running 1262r intake gaskets. is there an intake i can buy or maybe a 351 intake please help i hope i am not out 800 dollars i called the place i bought them from and they say they have never had this problem. thank you for all the help