Needless to say, having a picture helped. My "guestimates" were way off. I found that, between previously taken measurements and the picture posted yesterday, the runner is much "flatter" than I thought. I know the actual sponson bottoms are set at 3 degrees but what I missed, and would have missed without the picture, is that there is a .75" difference in depth of the edges of the runners below the sponson bottom. The outer edge is further from the bottom than the inside edge. Since the rear of the runner is 14" wide, this would mean the runner is only at 1-2 degrees and not the 3 degrees I thought it was. Now I get to start over on drawing the runners, if I want them to be close to accurate. Can we say "FRUSTRATING!!!!!!!!"