Rochester B BC, Autolite 4350 Pump Bushing - 90-36

Worked as designed Mike ,    I have question on Rochester "C" carb on the acceleration pump when float top is off . I can test the is flow around check ball though spring and tee and up through hole . But when you look at top section it is black off why? Where is fuel getting accelerated through? Their is not drilled hole their top section of holding floats? Just wonder how that accelerate system flows . Also is it OK to double gasket it . I had trouble with front sectio. Leaking out of 2 pieces where inlet pipe enters. Just was not enough clamping force in that area.  Thanks  Alex Gross 513-255-5158.