I have a set of 780cc Precision Turbo injectors and a AEM fuel rail. Does anyone have pics or a schematic that shows how the Injectors and the o-rings/Gaskets are supposed to sit?

Right now on the stock fuel rail it goes:

-> rail, injector, o-ring, rubber spacer/gasket ring, Manifold as I can recall.

For some reason the injectors do not sit right with the space/gasket ring right before the mani. Can I remove it? or does it have to stay? Whom ever has done a fuel rail and injector swap your help is appreciated. Thanks.