Hi Op, you say you have "factory spikes sitting on Herbie's discs." Which type of "Herbie's discs" do you have? Also, what kind of floor do you have? (I imagine that cement would be difficult.)
I use the Herbie's Threaded Stud Gliders on a wood floor. My B&W are simple to move around. Maybe factory spikes into their gliding spike feet are not as simple? If your spikes are lifting off from the feet when you move, just know that problem doesn't exist with their threaded gliders.
I use the Herbie's Threaded Stud Gliders on a wood floor. My B&W are simple to move around. Maybe factory spikes into their gliding spike feet are not as simple? If your spikes are lifting off from the feet when you move, just know that problem doesn't exist with their threaded gliders.