I've been searching for a set of risers for the passenger pegs on my st1100 and I can't find anything. I put a RDL seat on it and it changed the ride height for my wife and risers would make the ride more comfortable for her. I'm hesitant to by a set of universal risers from amazon. The description doesn't have any sizes and most of the reviews say they twist down when the passenger goes to climb on. Has anyone had any luck with this?