A new crankshaft and new cases will have end play of about .005" when the primary drive nut is tight. 

New OEM bearings on a crank with worn crank journals with the primary drive nut tignt will still have about .005" end play. 

Worn crank journals will cause up and down play on the ignition side.

Worn bearing pockets will cause up and down play on both sides as well as side to side end play .

A new crank with new bearings in worn out bearing pockets with the primary drive nut tignt, can have up to about .080" end play or untill the crank web bums the side of the case.

Did you use OEM main bearings or the Chineese crap that is being sold on Ebay?