Hello, Group, any help on the fuel pump would be appreciated. I have rebuilt the pump replaced both diaphragms, cleaned and assembled all parts as they were, The pump sucks fuel from the tank but has no pressure. There is a bulbus chrome piece on the outlet side. Is that some sort of check valve? When I remove it there is nothing inside of it. on the inlet side is a large chrome nut , inside of that is solid . Very confused. Thank you