Review on 2020 Profile X-Axis Straighten Tensioner & Z-Axis Leadscrew Top Mount Upgrade For Creality Ender 3/Pro, CR10, CR10S, And More By WINSINN by Richard Bowens

As others have mentioned, I had to take it apart and try some things to get the belt to stop rubbing. Took about 40 minutes to get it to my liking.That being said, for the price the thing is well manufactured, and once you get it dialed in, it works quite well. Really tightened up x movements especially with the MDD kit with a bmg clone, stepper, hot end, ducts, BLTouch, and fans all mounted to the x axis. Any slop would be exaserbated by all the extra weight.I give this four stars. The price is right, but as assembled it simply doesn't work correctly. If you're a diy sort of person. Which if you're modifying your 3D printer I'm thinking you are, you'll be able to figure it out and score a great deal in the process.