Sounds fairly quiet to me Brian. That clicking sound is probably due to the leadscrew drive gears not being set up correctly hence you have slightly more 'backlash' than necessary, try the 'paper' method to get the right amount of backlash. Without you having the gear cover open I / we can't see what the gear arrangement is. if you post a pic' of the arrangement I / we can help you set it up, it's quite easy.
… pic of my gear meshing set up using the 'paper ' method…

George.