my sled (1998 polaris indy 500-only 600 miles) wont run any higher than 6500rpm. im maxing out at 30 mph. doesnt have the get-up-n-go that it used to. changed the plugs and that helped a little, but then it sat for about a week and its right back to where it was. overall it runs pretty boggy. secondary clutch? head gasket? any help will be greatly appreciated