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Descale and regrease the flow control valve with silicone?
Went down that route, got the controls off, took a big wrench to the retaining nut, couldn't shift it. It's in my 'other' flat so it's not something I can play the long game with.
On the handle, what about surfing wax? Might look a bit like someone's spunked on your shower but meant to be quite adhesive I think.
Interesting, will look up. Ta.
I need to find something that could make it easier to turn the flow control on a shower. Does such a thing exist? I'm imagining a large rubber band with grippable lugs.
For this shitterly designed shower where the flow control has no 'handle':
I've exhausted all other avenues apart from total replacement of the entire unit at £££. Shower is 15 odd years old, replacement parts unavailable, nothing new fits it etc.