Thanks guys, I'll look at getting some filleting wax for the next one. Maybe I'll be doing the ignition cover side soon too - quite a bit more complex though with a much deeper draught.
I have everything (I think) needed for making the mould, just need to find a few free uninterrupted hours. Work is pretty hairy at the moment and I am loath to further deprive myself of any sleep I need to cope with the days ;-). Next update, and I'm sure questions, will be on the way soon.