Does the motor hold a steady but too low of an RPM or does it fluctuate? There are many different factors. First, make sure you have your clutches in top condition. Are you the original owner? If not, check to make sure your clutching is stock. Check your belt too. Check the track tension and chain tension. Your track could be too tight. Your tach could be off too. Take it to a shop and have it calibrated if you are doubtful. Your brake could be dragging. Check to see if the pads are still good and not hanging up. Hope this helps.