I've been thinking about doing some Calmini mods. This however does not impress me at all. While for now I am only interested in the front bumper, the engineers and QA's at Calmini need to do some better work. If I have to start grinding to make a trailer fit a receiver, that would be a real problem if it was a rental or friends trailer. "Bolt on" should mean just that. And a standard receiver hitch should be just that - standard!