Hi, I have a shower hose connected to a mira sport shower. The hose is leaking and ive tried to unscrew from the plastic outlet to no avail. Ive tried descaling both from inside the hose (by suspending it upwards so the descaler can remove any limescale deposits where the hose meets the shower) and also from the outside. I can get a good purchase on the connector with pliers, but the plastic bends if i pull hard. any ideas? Thanks