I am trying to dumb down my kid's trials bike as it just has too much power for her skill level and I want to put a cap on how much twist she can get. Do they make throttle limiters for trials bikes...or is there another way I can do it? We had some whiskey throttle awhile back that resulted in a good crash and now she's understandably nervous about getting back on. Until the nerves subside and the basics look better I want to make it a little more tame. Thanks for any suggestions.