Did you get fitted when you bought your bike. I have two 20" HTs and they climb different. The best climber, for me has a shorter steerer tube and allows me to keep the center of gravity lower on climbs. It also seems to help with lower back strain on long downhills. In addition to the other good advice already offered, check your tires for the conditions you are riding in. I have some Raptors that are great in loose gravelly stuff. Bontrager AC's for hard pack and rockier climbs. Overall the Bontragers are my favorite tires for riding in the Desert SW. I'm don't know about your region.