Vesta 2012 Accu-Slide gearmotor brushes
After a month of searches, I was able to replace the worn brushes and repair the original gearmotor. Now I have a perfectly useable spare. I found it on eBay, Seller Info -22newcentury(262273) for $5.69. Description - 1 Pair Electric Drill Motor Rotary Power Tool Carbon Brush 6 X 8 x 14mm. You will need to change the connectors to eyelets.