Was out playing in the woods Sunday. Was climbing a pretty good hill and had to go between 2 small trees along the way up and slid into one of them and hit it with the front tire and stopped. The problem is that when I hit the brakes, It would not hold me and I rolled back down the hill with only 1/2 of my brakes. Had this problem earlier in the month and replaced the booster that was bad. Thought that I had problem fixed, because I could tell a big difference on the braking. Now I'm thinking maybe my front calipers might be sticking and not grabing the inside if the disk properly.(even had a tire shop check my brakes and they said everything is fine) Has anyone had this problem. Have a 2005 TJ Rocky Mnt Ed. with 4.0 L and 6 speed, PB and disk on front and drums on back. All brake were replaced appox. 7,000 miles ago. Also running 32" tires, but had 30" from factory? Help me out guys.