I just completed the 200 mile service on my 2014 Grizzly 550. The factory really likes to over torque the drain plugs and oil filter. The manual stresses not to over torque but they have them on so hard you think they will never come out without breaking something. By the way the valve clearance was fine and needed no adjustments. I was expecting this but decided to check it anyways. It appears the exhaust valves would be hard to adjust from lack of room to work in the area. The rear dif did have a slight amount of very small metallic particles in the fluid.