I have installed a set of gold Gilles rearsets on my 'Bus and while I notice a little difference, it is not anything dramatic. I too have a kind of leg / hip problem that affects me more on the 'Bus than my previous bike, a 2002 'Blade. I was looking looking for a way to increase the distance between the seat and pegs a bit and have tried the rearsets. While the Gilles rearsets look the business, they have only made a little difference.
W