I mated the dpfi manifold with a 98 non vtec head. im getting a bad leak from where the intake manifold and the head come together on the left side of the block, i put a new gasket there and it now its coming out through the exhaust manifold(im running open header, i took the exhaust apart) i noticed that the opening for the coolant on the head is round and the one on the intake manifold is not. What do i do?!