I have a 2007 xrs it came with the 159 track which i just switched out for a 162 camoplast challenger. I mountain ride and want to know if gearing down a little would be helpful. I made a mark on my clutch to see how high my belt would ride, there is about a half inch between the highest belt mark and the very top of the clutch. I know you can gear these down too much though. would gearing it down one or two teeth help me any for mountain riding or should i just leave the gearing how it came?