At least you've got a few options. I'll pm you my mobile number if you want a chat about the milling.Yes we did speak about it when I bought the board.
Very reasonable price to for the machining. I'm doing it all myself now though as I have a small engineering shop as part of my business.
Not sure what to do with the spitfire board now though as the G7 Fly bits came along cheap and seemed more of a challenge, besides, I love the look of that trigger. Also daft as it seems, I like the ni-mh battery idea