Dan Krier, I had the same result as you after doing a good search brushes discontinued and no alternative part listed. If need be, in the past I was able to order similar brush to what I required in a old saw(new brush was a little wider) so all I did was sand it down a bit to fit, reused old holder/spring and it worked very well. Below is a sample of brushes that are available for power tools. etc.. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.

https://www.amazon.ca/s/?ie=UTF8&keyword...

http://ohiocarbon.com/products/power-too...