Once the shims were match drilled to the top channel I drew a line on the top plates where the holes needed to be drilled according to the plans. I then clamped the shims over this line such that the line on the plates were centered in the holes of the shims. I then used the holes in the shims as a guide to match drill the top plates. The shims and top plates were then clecoed together onto the channel and everything was match drilled again just to be sure to be sure.
Shims drilled to top channel
The shims were then used to drill the top plates with the bend
Top plates and shims drilled and clecoed to the top channel