I could not get the line I drew on the JChannels to show up on the end bulkheads. Turns out that I left a small edge when I cut the them that is keeping it from moving into place. I had to uncleco and remove the JChannels and tweak the ends with the grinder. Clecoed everything back together and started to final drill the holes. I am starting on the upper JChannels first. Seems like that is what most folks are doing. I hung plumb bobs on both ends to keep everything squared up.