Finishing the restoration of an Oliver 70 RC, 1946.  Been pretty straight forward so far.  When removed engine clutch housing noted there were several shims on each side of clutch housing and under the front pedestal of the motor.  Suppose for allignment of stub shaft between clutch and transmission.  Does any one know a good meathod to align this, and how critical is it.  Plan to use the tractor a good bit for years to come.