Great Video! Followed along using the Micro-Trains 2004-1 and went along great. Found I did need to file the sides of the 2004-1 so they would fit perfectly. Thanks, Tam!!!
So far this method also works for the Kato ES44 locomotives using these exact couplers from MT. I havent tried it on my Kato SD70M locos yet since I ran out of couplers but I hope it's this simple too.