Offside roof is bending out
3 pillars have now been fixed into place on the offside, but I am only happy with the first one (not visible in this shot). The 2nd and 3rd pillars (visible here) jut out at too acute an angle.
After a lot of head-scratching, and a lot of advice from contacts, it seems most likely that the weight of the roof has forced it slightly outward in the middle. The angle in the middle of the uprights is broadly correct.
I plan to use acrows to jack up the centre of the roof (I have one in place in this photo) and see if I can correct things by supplying gentle and uniform pressure, having loosened off the uprights at the base.
We will see...
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Material Copyright © 2006 John Braga