Back riveted the rudder trailing edge. Used a 2x4 weighted down with weights from some barbells. Followed the procedure in the manual where you set a few rivets partially then continue to set about every fourth or fifth rivet until they are all set. Worked well and happy with the results, including the straightness of the trailing edge which is critical.
Posted a question on VAF to understand of the gap I saw was standard and it seems to be.
Also started rolling the leading edge, completing the top two sections using a 1.5" PVC drilled to match. I did not complete the bottom section due to the rivet issue from the main spar.
