I have converted my Sinister R9 to singlespeed using a yess chain tensioner. I am currently using an older LG-1 chain guide which has worked flawlessly for 3 years. I realize it is not recommended for dh but I'm wondering if I could get away with just using the XCX guide on a singlespeed downhill bike. In addition to the loss of weight, changing chainrings and maintenance would be much easier.