I've only messed with Milodon's. But
Is the shaft directional. in other words does it mic differently from one end to the other? There are two supporting bores?
Heating the bores would be good, especially with an arbor press. I have one and the only thong I've used it for was punching holes in gaskets and pressing pem nuts in sheet metal. I use my hydraulic press for these kind of jobs, press pins and the like.