Andy,
I know you can get lathes that cut every thread under the sun (at a price), but I have always baulked at cutting BA by single pointing.
I know it can be done, but the ease of which it can be done with taps and dies makes me shy away from it, due to it having no real basis about it. It seems that each size has it's own set of rules.
Just as an aside to this topic.
I am sure that with a little work you can get a mod 1 x 127 in there.
Next year, I will be playing about with mod hobs, and if it works out OK, I won't mind cutting you some gears up to play around with, I have a full set of hobs, mod 1.25 down to mod 0.3.
But please bear in mind, it is when I get around to doing it, not when someone wants me to.
I am still trying to find some bits that I promised another member ages ago, but because I can't get to them, I have to wait until someone comes around to do it for me, and that could take days to go thru all my stash points. Two failures up to now, but they are there somewhere.
Bogs