After doing some internet research, I figured out how I should drill the the blocks for the canopy frame to the ribs. It's quite simple, but I was hot and tired yesterday and not thinking clearly. I matched drilled the blocks to the ribs afer removing the center section. Initially, I drilled them to #12, and then #10 on the drill press. The single, rearward most hole in each block was drilled to 1/4" on the drill press. I ordered a case of oil and a filter for the Cessna and got some AN 365-832 nuts and size 8 screws as well. As soon as I placed the order, I found a bag of nuts in the garage. Oh well, they will come in handy some time.