My wrists are shot, so I bought a finger throttle for my 850 na. Installation was easy, initiation not so bad, need time to feather the throttle though while tree riding. Then on my third ride hit a stump, jerked my handlebars hard to the right, my hand got caught between the guard and the handlebars as I went flipping over. So I removed the guard, then put a soft handguard to prevent this from happening again. Last ride, as I was going through a very narrow opening in the trees, a tree hole made the sled tilt to the right hitting the tree pinning the handguard on my hand and...wide open throttle! The sled jumped wild for about 20 feet before I could free my hand and hit the kills witch. Could not reach the tether safety as I was hanging on for dear life. That's it for me. Going back to thumb throttle...