I have a 2008 Vegas & a 2011 XR. I quickly noticed there is a difference in gearing. I prefer the taller gearing of my Vegas. Can I put a Vegas pulley on my XR to make them geared the same? By the way I ride solo without my saddlebags full of gear. I know the XR is heavier, but I can choose the right gear for my speed and load. Also, I hope to improve my MPG on the highway. Am I right about changing the rear pulley?