Fuel pressure dropping while driving and under acceleration to zero at idle runs 4 lb electric Blue

I had a chance to look at the fuel pump tonight. I took the bottom plate off and the spring out and the little plunger. It looks in perfect condition. No sticking at all in the picture. One of the little vains fell out I have it.. now I am not sure where to go from here. Is it hooked up backwards? Can anybody tell by looking at the bottom? I haven't crawled underneath to verify in and out. I'm pretty sure it's right, but at this point who knows lol in the picture that incoming fuel is at the top and going to the carburetors at the bottom.