This is one of the best mods I have printed. I was never pleased with the wobble in the carriage even after adjusting the offset nuts to get as tight as I could, it just never did the trick. This design removes the wobble and it is rock solid. I have printed 2 variations for my initial stock hot end, and then did one for the E3D V6. Once I get a second E3, I will print another variation of this module. Thanks for Sharing this! It is incredible.