If you move fast, the weight stack on the left cable sometimes gets stuck a bit on the way down (chattering). It's particularly noticeable if you load the add-on weights unevenly--i.e. use just one. I don't know if the guide rods need to be greased or something else.
If you move fast, the weight stack on the left cable sometimes gets stuck a bit on the way down (chattering). It's particularly noticeable if you load the add-on weights unevenly--i.e. use just one. I don't know if the guide rods need to be greased or something else.