thanks for the input guys... my dad runs aroostook county trails in northern maine and the trails are always mint, but he is new to the sport and the darting is really holding him back from going over 40mph or so. He is close to retirement and bought his childhood home from his Mom and is fixing it up and spending 2 or so months a year up there. We love it and I am pumped to see him into sledding. He is now able to take trails he hasnt ridden since childhood on his bicycle. When you speak of the shims... can you buy those somewhere? I got a set for mine, but I got them through Bergstrom's with my triple points. thanks for the input.