Interesting result. Well done.
As has been proven, there do remain other perfectly capable specialists out there, the trick is tracking them down and being assured of a good enough result on a bespoke and theoretically irreplaceable item!
If you haven't already, it's worth mentioning this lot to MMC. In the same way as Willie at CLCM has been a small-scale class act for wheel alignment and tyre fitting for them over the years, the Sailmakers could find themselves on a useful referral basis too? I believe MMC have had dealings with David Hannen before as well. He did some decent seat-trimming for my Elise, 1st time around, although I subsequently changed to Corbeau inserts which I self-installed and they are even better.
And I was absolutely very impressed with Chris (Corranga's) results on his completely re-done seats.
Me, for the roof I'll probably enlist the mother-in-law when the time comes, who's a dab hand with a sewing machine

Campbell