On Saturday, our group of three riders rode a groomed hard pack icy trail to the top and noticed our hi-faxes smelling so we stopped frequently to kick snow on the rails to cool them down. We've decided to put scratchers on but don't know if we should use standard snowmobile scratchers or the ones that are flexible that can be used in reverse on a sled. Does anyone have experience with scratchers on a Timbersled and any suggestions for what type or brand to use?