After a period of inactivity due to other life stuff going on I spent yesterday trying to get the final woodworky bits on Rhiw done i.e. the pros-arch bit of the fascia. As expected, due to minor cutting discrepancies throughout, the two halves don't quite line up. This is not a bad thing - the important part is that the track lines up/can be adjusted. The the slight (1/4") off in all directions of the pros-arch will be masked by a clip-on 'keystone' which I have yet to design. The important thing is that in real terms I've avoided having to transport 8' of whippy MDF to exhibitions.