As for "relabeling" motors, this is the story. Most motors come basically the same way. They come to Bill's (and other tuners) workshops as teardowns (no stickers brushes, springs, and certainly not cut round or with the hoods lined up).
Bill and every other tuners does as he/they feel fit to make a motor ready for sale. If there was a problem with a particular item bought from Bill, i strongly suggest you email him to resolve it.
Don't you have a couple of cars to be building?
Team Power Push
Protoform Race Bodies
KSKT Racing - #1 in SK Racing Chassis
Darkside Motorsports - "WE ARE WHAT'S NEXT." - www.darksidems.com