I received my replacement arbor assembly from Ridgid at no charge. I installed it (although it was missing instalation instructions), and now my stacked dado works MUCH better (and saves a lot of setup time), It took me about 45 min to figure out and execute the switch, but it was time well spent. Ridgid sent out the part and I received it within 5 business days (Thanks Ridgid). If your replacment is missing the instructions email me @
dnamaw@aros.net and I can give you some basic beta to get through it.