More difficult with a flex hose I agree but you need to move the locked on grease head sideways until it reaches the limit of movement determined by shape of grease nipple. Further pressure sideways will allow leverage and it will/should suddenly drop off. Much easier when grease head attached to solid pipe. Trying to pull off straight will generally not work!
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone
