the 18 isn't feet.. it's stations. I did areas of each 6" section. So to modify the curve... I need to, instead of multiplying the curve by each station, multiply the curve by "how different it is from the ideal". Say my wing has an average chord of 2.5'. At the tip, where it's 1.5' it's only .6 the expected cord. So I'd multiply the lift there by .6. (well a little more since we'd be talking a point 3" in from the tip..) And at the root, where it's 3.5', I'd multiply the lift there by 1.4. (well, a little less because we'd be talking the slice of wing that's the last 6") I can't wait to compare how the two number sets come out. Knowing the error will be ... uh.. entertaining.