Great info. You have me convinced to try the larger front/smaller rear combo. I think I'll go ahead and move the 2.1 Nevegal to the rear for now and put on one of the 2.35 Klein Death Grips on the front and see how it feels. The nice thing is I have a year to dial in the ride before I try to break the hour mark on that course. That would actually make my day after only a couple of years of riding off road regularly.