1995 Seadoo HX. Dual Mikuni SBN 38 carbs. I took apart the pump cover from the MAG carb to check the fuel filter, reinstalled everything as it was, and carb did not pump. Tried again by priming first, still absolutely nothing pumping. PTO runs perfect, its the MAG, the one I opened that is not working. Gaskets looked great and it was running fine before all this. Any tips?