As promised, here are some photos of my fender setup. You can cut the fender with a Dremel or even careful application of a hack saw. Measure everything several times first!
I had to bend the front bracket to clear the headset and to lift the front part of the fender (probably an unnecessary piece, but I put it on anyway) up high enough to quit chattering on the tire.
The auto-focus obviously liked the far stay and I didn't catch it until I got to the computer. It's good enough to see the use of the P brackets.