Not a huge amount of progress today.  I finished fixing the edge roof plank on B side which needed it's 8 horizontal coach screws and also put the torsion lozenge in position.  Paul and Jim spent their time measuring and sorting out the last remaining planks which will all be forced into place at the same time.  There is space for 4 full width boards and a small one less than an inch wide.  we decided to fabricate one wider plank to fill the gap from pieces of another 2.  This means cutting 2 boards lengthways then planing a groove along each inner edge then glueing them together.  We got one cut and the edge routed and smooth ready for cutting the groove with a plough plane.  These are now ready for the second one to be cut next week.    We might even get them all fitted next week.