The main difficulty is the lack of mechanical drawings. The position of the mounting holes and the size of the board (their technical specs make it 2.54mm by 5.8mm which is obvious nonsense) is the main unknown (and it appears to be on .9in like most of them not the 1.1 in on the V3) part. It is easy enough to change one of the existing ones if you can get me the position of the 2 mounting holes and the size of the board (perferably via vernier calipers). The rest of the stuff is available in their pictures. It may be the mounting holes will turn out to be the same as on the V.1 boards in which case I have the start of a part.
Peter