Hi, our shower handle has become increasingly difficult to turn and I can't figure out why. It's the same as the below link brings you to - please can you advise what we need to buy / change or if I should just call a plumber to help?! Thank you
https://spares.hansgrohe.co.uk/etk/...000061/modell/10700XXX/partlist/8796201856867
https://spares.hansgrohe.co.uk/etk/...000061/modell/10700XXX/partlist/8796201856867
