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I just e-mailed a PDF file of the drawing sets (that you have) but I added in comments on the support drawing that show the dimensions that I used for my seats. Note, you will need to get creative on the curve of the support back and should use a compass to create the radius cuts. For the angles, if you print the support drawing, use a bevel gauge to measure the angle of what is on the drawing, and apply it to your material....it is the same even at a smaller scale.