knitting machine knitters...Brother?

Hi,
I was wondering if there are any machine knitters out there. I was big into knitting machines years ago and then got out for a while. I have recently picked up a good used machine, but no one sells them any more and it is hard to find yarn and tools. I have picked up a few things on ebay, most are quite pricey. I am looking for a set of adjustable 7 prong tools, and an inexpensive yarn supplier. I have just been making some sweaters and hats for presents. I chart my own patterns so I don't need patterns, but it would be nice to have sources if I need needles or parts for my machine.
Thanks