I bought a 2011 ER6N in Cambodia this year. Pretty sure it needs valve guides as runs out nice, but oil consumption is way up. I live in the states and got a 2015 ER6F (ninja) from a friend that was wrecked. Anyone know if the top ends are compatible? If so, I would pull off the 2015. spec it out and rebuild what it may need and bring it with me this December to put on the 2011. Anyone more familar with the 650 twin engine your input would be most appreciated. Should mention machine work let alone parts sourcing in Cambodia is a non thing.