Update:
Well, we have a failure due to the bell spec. Whilst they were fine for race/hot climate applications (for what they were actually designed) when you can run without a splash guard, it wasn't fine for me.
I couldn't get a decent enough fit on the guard and due to the offset of the discs, they were a little closer to the lower ball joint then I'd have liked.
So I discussed it with the people who buy in the AP kits and do the custom bells & carriers, and rather than re-engineer them to my spec I decided to call it a day and just go for something off the shelf... it makes it easier in the future.
I'm in the process of deciding between a few kits, an AP kit that'll be available for the VWRacing Scirocco race car in around 4 weeks, VWRacing's own stoppers and some Alcons. The latter a leftfield choice but also come with an excellent reputation and being a little cheaper, it'd also mean I wouldn't have to stretch my savings for my new wheels - so I have some thinking to do!!!
Strange thing is, I'm not annoyed - more a little red faced as I feel like I was crowing on here and now it's gone tits up, I'll be more modest in the future!!
Nothing is ever easy when you go off piste, eh? - GRRRR!
Brake filth, ohh I feel duuurty!
