I have pulled the seat,tank and airbox.Cleaned all and reinstalled.The tank had water and rust from the filter.The airbox had dirt,oil sludge at the bottom.Am cleaning chain case now.Read about changing reeds which I plan to do since I run Boyesen power reeds in my Summit 600.Can I remove the divider plate in air box or drill the holes?Any tips from a fellow Yamaha rider to make this sled as good as it can be?It does have an extension kit and new 151 Camoplast track.It also has Simmons Flexi-skis.Thanks for any advice!Have a great day and pray for deep powder this winter.