working fine

Much easier to use than the model that requires cutting the belt to length. However, a couple disappointing parts: * The ceiling mounting brackets will not properly hold the track if the bracket is on top of the buckle, due to the plastic lever getting in the way. I had to use a dremel to shave down the lever thumb press by about 1mm to get the brackets to engage on the track. This made mounting the track on the ceiling much more difficult than the older model (the one with the belt). * Note that you cannot change the size once you move the retention post all the way into the secondary bracket. (Also, the instructions are not super clear on this -- you have to move it all the way to the right so that it clicks.) * This model cannot be hidden as easily as the older model. For example, the motor can't be flipped over to hide in the ceiling above. * The instructions don't mention installing the brackets that allow you to hide the ends of the track. Despite these, great product.