Like some of the above posts, the pto end of crank is hardened. Some of them are not very easy to turn down, would be better to have it ground. Turning off .060 a side as hard as it is plus add the interruption of the keyway, making it hard to get it round is why it is desirable to have it ground. Also getting the radius put back in right.
I have done it before and had no problems, just might be easier to find a 1" crank. The commands, I believe are mostly interchangeable other than the 30HP. Just check to make sure if it uses the shim or not to be sure of end play.