As a coupler public service announcement, note that you will give up some draft-buff-draft reliablity if you modify your Kato couplers as depicted in the video above on your Kato-MTL joints; The extension’s purpose is to make the Kato coupler joints more reliable with MTL couplers ironically. I’ve tested this so it’s not just theory. Depending on your own needs, it might be a worthwhile tradeoff, and Kato couplers vary a great deal model design to model design. I’m guessing the knub size has varied from design/and or run, given how Kato does couplers, but I’ve not researched this. If you only run your trains forward and you don’t have any hesitation events, all good chop away. But if you find automatic coupling an issue on your specific model and need reliable MTL joints in more challenging circumstances, try filing down the knub a bit before entirely removing it, and you should end up solving the problem without creating another.
