Hello, I recently fitted a new motor and re-assembled the shower and it worked fine apart from a dripping shower head so I took it apart again and have just fitted a new set of sealing rings but now after I fit the Thermostatic Cartridge ok, I don't know how to get the associated thermostatic control fitted correctly. I have looked at the exploded diagrams on the Aqualisa site but its not clear. Can anybody advise please.