I don't really want to change decks but have had two spindle pulleys go out and replacements are hard to come by (UC21496). My son-in-law and I have changed belts, blades, spindles, and one damaged pulley. Now another pulley has gone bad and my local John Deere dealer is having trouble getting them for me. I want to change the two remaining pulleys. If trouble with the deck continues, I would consider changing decks. My wife would like for me to get a new cheaper tractor but I would prefer just a new deck since my 2006 X320 has less than 500 hours on it.