has any body have a corbon seat and back rest on there can am rt spyder? is it beter than the stock seat. my wife says the stock seat hurts here back when she sits on the spyder. that is keeping me from maybe buying the spyder rt. the back rest hits her in the back. where our goldwing she can lean back and rides with no problem. the corbon seat back rest looks some what like the back rest on the goldwing.