got the z installed a couple weeks ago. a few bugs but nothing earth shattering. it works great and got rid of my slop I had after 10 years of use. since it has a easy to adjust bar to hold the dust shoe I changed my old design thats clamped onto the spindle to one that can be adjusted. I like using horsehair brushes as they last and are really flexible. but for the 3" long ones I will have to make a wider shoe as they tend to get sucked up when cutting. I have room now to get a 4" hose in front but it would be tight and I would have the same issues I had with the 3" in front rubbing on everything. so I will stick with 3" and I will go to 4" right after when the new hose comes in.