The shimming in the manual and separate sheet is only a recommendation, if it's too tight to turn then something is not right. It should be slightly tight, i.e. a bit notchy. On mine I had to remove one of the shims behind the pinion to achieve the correct mesh.
+1
My rear shimed out really nice per the extra shiming instructions they added. I had some notch when turning the rear shaft by had and felt good. When I did the front per directions I had a heck of a time turning the drive shaft! I took out one of the thinner shims and then the front felt like the rear.