Swapped new pump into old reservoir. Now I have a leak at the pressure fitting on the pump. I tightened that nut down and put a new hose. Yes, o ring on the hose. O rings on the pump. So pissed. Went from one leak to another. I test fitted the hose to the pump prior to install and it would not thread. The fitting had a brass insert inside. I swapped fittings with the one that had no brass insert. Is that my problem?