Awesome! I highly recommend this along with https://www.thingiverse.com/thing:3541897. I had my first multi-color print last night that required ZERO intervention due to MMU2S load/unload problems. When I first attempted the same print a few weeks ago I had to intervene at EVERY color change. This was due to the fact that I was using 3 different brands of PETG to get the colors that I wanted. (I was trying to duplicate a company logo and match colors as close as possible.) I probably could have spent a lot of time tuning the temps/settings for each individual filament, but with these 2 mods i didn't have to.