I recently acquired a Unisaw Model 36-869 (also known as a 36-842). This is a left tilt model. It is in very good condition except for the arbor which has some strange wear such that it will not center the blade. The arbor part number is 422-40-303-0002. They are apparently quite hard to find. Renovo lists them on its website. I ordered one via their web page, and I received confirmation of my order. That was a few weeks ago. All attempts to reach them since have proven fruitless. They have a phone number which directs you to call another number which is never answered. Sawcenter also lists the part. They have never responded to several emails, and they do not list a phone number. Does anyone know any other potential source for this arbor? Thanks.