ORIGINAL: slicks
Matt --- I don't think that it is screwed on -- it is just on the brass collett very tight. Do you have a dead blow hammer or a rubber mallett? You may need to knock that bad boy off. A few quick hits to the back of the wheel should do it --- but not too hard - you don't want to damage/bend the shaft.
If you have any more problems - call me at home tonight.
I'll try working it off with a rubber mallett, I'll keep ya updated.