That would make sense Antoine. They did change & up the amps on the Ametek motor used in the Compact when they changed the name to TriStar. I currently am running a Hoover Windtunnel Anniversary Edition S3670, and I also have a Miracle Mate Mark 1 that has the original GS Electric motor from 1994. It just got rebuilt with a new cord to replace the cord reel - no point in replacing the cord reel when it's a bad design that would break again, the motor got new carbon brushes, I modified it to use Miele GN/FJM bags since the brown paper bags clog too easily, and I replaced the cloth exhaust filter with a Electrolux Guardian HEPA Filter. The Hoover is also going to get a new motor soon, and I put a different PN on it since the Windtunnel PN is too wide for the 2 rooms with carpet. I also converted it to use Miele Gn/FJM bags as well.