Anyone know why are there two thickness of crankcase housing bearing sleeve thickness options?  Thick or thin, blue or red, which one do I use when replacing the crankshaft. Do I Use both blue for left side case and red for the right?

[2015 Z Force 800 53/Trail EPS]

As I understand it, they use them as thrusts..as in crank end-play and you use what it left the factory with. At least that's what someone said a while back.