Dave - not a word from Wolfgang so far. I suppose he's busy winding up his extra job of representing the university in some official capacity, and will surface again when he's finished with that. I will turn up outside his door (showing off my new metallic blue Opel car!) on the night of Thursday, 29 Apr, and see what happens.

As to the T-shirts - sorry, I've got one already and found I'm not the right shape for it ...