The cold water tap on Aqualesa bath/shower mixer is not working. Turning the tap fails to turn the spindle because the two components (the blue one is plastic)in photo 3 do not lock together because of wear (the housing in the inside top of the shroud has cracked badly and the top of the blue cap is also worn.
When I turn the spindle manually the tap works fine.
The other two photos show rest of setup.
Aqualisa no longer supports this model.
What I need is to replace the shroud which is about 1.75 inches high and 1.75 in diameter.
I would very much appreciate comments on feasibility,possible suppliers.
Many thanks