Undertook the 20,000 km service on my 2010 K1300S . I do the mech work myself on the bike .The valve check was spot on 010.on the intake valves and .014 on the Exhaust valves . the plugs were Perfect gap had not increased at all , only slight signs of detonation likely caused from coming off highway speeds into a town and leaving it in 6th gear and rolling back up to speed , Note to self downshift when slowing down thru towns . I will change the anti-freeze/Coolant as it was drained when the rad came out as well next is the diff lube and input shaft greasing , and to order the carbon fiber bits for the bike not to save weight but the love the look . I have been doing this over a number of days as I have to stop to get special tools etc because the bike is now on the center stand for winter . the mileage is 18,769km oil and filter and both air filters will be changed . I did not use K + N air filters as I feel from past experience they do allow better airflow but also after time allow more ultra fine dust to get past and i dont want to do rings before they wear out on there own .Been a fun project so far .