Okay back to the build. The next step after getting the P-1 pieces in is to insert the B-4 leading edge block. After a bit of sanding it went right in. I glued it with Titebond and clamped it as best I could (Picture1).

I blasted through the next couple of steps - sheeted the lower wing, and epoxied in the blind nuts into the P-2 assemblies.

The next part wasn't tricky, but I took my time to make sure it went well. This next step is epoxing in the P-2 assemblies into the wing. Dry fitting is a must here. I ended up lightly sanding to make it fit - even then the final "thrust" into the wing reguired the use of a small screwdriver and both assemblies "clicked" into the wing (picture4) . I then removed wach assembly, mixed up some 15 minute Epoxy and re-inserted into the wing. I took care to make sure each assembly was fully seated against the main spar.

Picture1 - B-4 Glued and clamped
Picture2 - B-4 from a lower angle
Picture3 - Sheeted bottom of Top Wing
Picture4 - A little leverage on P-2
Picture5 - P-2 Clamped and Curing