Sorry to butt in here, but I have the same issue with my Calypso, and may at least be able to chime in with some info.
First, getting the lock nut off gave me some fits using the universal too bought at the helpful local appliance repair place. The prongs on the took are too 'tall' and tried to move the whole shaft instead of just the nut. Holding it up just a bit while whacking it solved the issue. Also, the nut is a normal threaded one - the tech at the shop thought it was reverse threaded.
Ok, even before I got the nut and then the u-joint off, I noticed that the inner basket turned and moved up and down, wobbled, etc. independant of the hub/inner wash plate.
Once I got the basket out, it is pretty clear that the hub shold be tight on the basket. At least I _think_ that's the case - can someone with a working Calypso confirm that they can't move the basket w/out turning the rest of the assembly?
I don't see a great way to tighten the hub that sandwiches the basket between it. Any thoughts?
I hope this helps a bit - this is the closest to my OB issues on my system, and before I plunk $150+ for a new basket, plus a balancing ring that got worn through, and a new outer wash plate since the gasket is deformed (total of about $250 in parts) I wanted to see if I was alone with this issue
Thanks much,
Kevin M.