I had a plastic "Easy Steer" kit or as some people call them "Dart Kit" for my last sled to stop it from going from side to side on the trails. It had metal skis so they fit on just fine and worked great. My new sled has plastic skis and an "Easy Steer" kit will not fit on them. Can anyone tell my a way to stop my sled from darting on the trails? If there is something I can buy, where can I get it? Thanks.