So I realized that I never put the upper leg pieces on my corner blocks before I squared it all up. I went back to do 1 corner at a time and discovered that the nut is protruding past the bottom of the corner piece so the conduit will not sit in there flush. Am I doing something wrong?
DUH!!! I am doing something wrong. If you simply put the screw head on top and the nut underneath everything works fine. It has obviously been a long day for me so I think I should quit while I am ahead (a little behind?). I feel like an idiot for not realizing this issue sooner.