Ok I got it apart
The only thing I can see is a wire coming from the coil as in the pics attached.
Is that fine?
That wire must not be between the rubber and the silver/copper insirt. When they manufacture them they put the coil wire between the rubber and insirt.....that is wrong. The wire must be touching the insert, so that the rubber o-ring can seal. These Tanks are very sensitive, but if you get the hang of it they are Realy BEASTS!