[johnny_quattro]

Thanks for both updates. I've ordered some Sugru to see if I can seal up the boot lid, which seems to be taking on more water than the Titanic each downpour. The transmission tunnel orange thingies can be attempted later hopefully. I will chop the ends as suggested to allow better flow.

I've taken to using a small length of clear plastic hose to drain water from the pan/reservoir directly underneath the twin cylindrical fan/blower under the bonnet. I've also used the same gravity effect to drain most (if not all) water from the rear heater vents where the sloshing sound emanated from. That was a very pleasing quick fix as the noise was driving me mental.

With regard to the printing materials you mentioned MJ, that sounds very interesting so keep us all posted, as you no doubt will ;-)