I am putting a nx stage six plate on a single plane dart manifold. I noticed with the plate on the intake opening is a little smaller in the middle area than the plate. I would not call it cloverleaf but the intake opening is smaller than a 4150 gasket, do I need to open it up to match the plate? I use to have a nos super power shot plate on this intake but I never looked at how it matched up. Thanks for any help .:smt100