I have a 15 x 6 apc that I had to take 1/2" off the ends of to clean up a chip out. I wanted to keep as much as the prop as I could so, I changed the shape. The leading edge now is larger diameter than trailing edge. Will this be o.k.? Stupid question...Why is it alway the other way? What am I giving up. Please see uploaded picture. The top prop is 18 x 6 not modified and the bottom prop is my hack job.