I am in the process of replacing the flow and return to the fuel rail. I have new hose and fittings. I was hoping to get the old hoses off of the OEM connectors, they are off of the fuel rail. Not having much luck due the to metal securing rings. I really need to get the 90deg OEM connectors out put cannot see how to disconnect them. Obviously dont want to break or damage them so any help would be good thanks.