Robert,
I think that this thread may have set a record for longest thread that actually stuck to the original machine and subject. :whistle:
At any rate, although there is no way in which you can recoup the time you have spent trying to remove that arbor, all is not really lost. If you have finally decided that you cannot remove it from the spindle, sacrifice the arbor and cut it off. There is a guy on eBay who sells new arbors in all three diameters. After the amputation, remove the spindle from the machine and take it to someone with a 30 or 50 ton press and have them remove the arbor stub. Then decide whether the spindle is usable/salvagable or not. If not, replacement spindles aren't easy to find but eventually you should be able to locate one.
Robert D.