Multibob
.020 Over
Steve I found it usefull to just snug it up on the bars so that you can move it with a bit of force, then ride the bike and adjust as your are riding. also are you sure it is 18"x18" as windvest only lisy 16"X16"for the Rocket. also if you want it higher just flip the mounts, this will give you an extra inch or so in hight..