Electric shower - dripping between solenoid coil and valve assembly

[starwarrior2]

I have a triton T80si and it has started dripping water all the time (when off as well) between the solenoid coil and valve assembly.

I have tested the coil and get between 3 and 4 K ohms of resistance, so the coil seems OK

I would be grateful for any advice. Should I simply get a new shower?

Thank you