I just bought a Vermeer 252 out of Florida and it should be here on Monday. Im sure its going to need new teeth or at least Id like to have an extra set. Im a small outfit and may grind 3 or 4 stumps a week with this machine. Should I stick with factory Vermeer teeth or maybe the green teeth would be better. Ive never had a grinder and am trying to get an idea what the teeth are going to cost. Im located on the Va and Nc border, Where is a good place to purchase this stuff? Thanks