I have a 2011 RT-S and would like to put on a backrest. Me and my wife have looked at the design of the Utopia and she wonders if her legs will hit it on the bottom corners ? Anybody have one on an RT that would have had a passenger that would know first hand ? The Corbin rest is tappered but it's only for Corbin seats so I would like to find an answer before I buy one. Thanks Rick