I am currently at my wits end, and have been working on trying to fix this off and on for almost 2 years now, to no avail. No matter what I do, the bottom belt binds up in the exact same spot, every time. I've doubled checked all pulleys are assembled correct, retensioned the belts a dozen times, replaced the belt 3 times, replaced every single pulley at least once, replaced the gear pulleys on the steppers. Bought the upgrade from 3.0 to 3.1. Nothing seems to work, and on reassembly it binds up in the exact same way, every time. Any advice is appreciated, video attached. Thank you in advanced to anyone taking a look.