I also fabricated a new forward mount because the original broke while I was working on it. Not a good sign! I had had to remove a considerable amount of the centre section to provide clearance for the forward wing strap and I guess it was just too much.
I removed a layer of ply from the centre section on this mount too. You'll see that a little further down.
Drilling the wings (again)... Trusty Forstner bit.
Holes drilled.