OT: dsteel, I know what you mean. The 12H would handle it no problem, but it'd be hard on cutting edges. Your parts salesman would be happy, LOL! And you could always scarifiy it but that's a lot of extra work, and with our luck as soon as you got it done we'd get one of those 10 inch Texas frog stranglers and your road material would be back in the ditch. You are probably smart to get that drainage work done first, 'cause you and I know it's coming.
As you said... go figure.
Later and Best, bulldzr