I race hare scrambles and my biggest problem is killing the bike on the STEEP little rocky, rutted, tree rooted hills. Some of them are almost straight up and down but other guys make it up them fine. I added a flywheel weight and a 3 tooth bigger rear sprocket and still kill the bike alot. Its really exhausting to kill the bike on these steep sections..either push the rest of the way up(if i can) or roll back down. I think my foot on the rear brake is causing me to kill it some times. Any advice will be appreciated.