Making slow progress, I completed the shear-web on both main and secondary spar and sanded it all.
You can see an issue that came up on the secondary spar centre section. It is made out of two spruce sections on each side of the rib. Due to the angle of the spruce sections, there was a gap between the shear-web and the "outer" spruce. I filled the gap with PVA glue.
In addition, I made and glued the blocks for the landing gear mount supporting the upright section, laminating the blocks in opposing grain direction.
Cheers,
Eran