So I've had these boots for a little while now, and loved them until yesterday. I used them to climb Mt. Hood twice, Mt. Adams once, and then took them up Mt. Rainier this weekend. Going up they were great and we made great time, but coming down my toes began to hurt. By the time we got to Muir they were hurting pretty bad, and by the time we got to Paradise they were killing. I had blisters galore over several toes and some discoloration below my big toenails. I've never had any issue with them until yesterday and don't know what to do next. I am normally a sz 10, went with the 10.5's. I have noticed a little bit of heel lift when going up, but not much at all and it doesn't rub enough to cuase blisters. Any idea what I can try to make these work for me? I don't want to have to go through that again, and I don't want to be stuck with an expensive pair of boots that kill me on the way down. Thanks all.