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there shouldn't be any spacers that go on the shafts ahead of the mains.  The CR's like the 250 you are on will basically change postion when you assemble them and tighten that spacer when the primary gears is put on and tightened that the power side main seal rides on.  that will tell it where it is going to be in relationship to the bearing.  Since you didn't ask before,  it is a little late to put it in the way I like,  but I would assemble with said spacer tightened down and if you feel bind simply smack the fywheel end of the crankshaf about 30-45 degrees of the shaft itself.   The bind should disappear.    I hate getting that far and finding that.   Other bikes have a similar thing take place when the primary gear is put on and tightened in a lot of cases.