Hi Jim - I¡¯ve got a K3 slider and I designed a ceiling mounted guard for mine that has integrated dust collection. I wrote an article on making the guard for Canadian Woodworking Magazine that you can find here.?
For the zero clearance insert, you should check out Ramon Valdez. His is by far the best for the saw. You can find him here?and on instagram?
Lastly, I¡¯ll take this as an opportunity to mention my Fritz and Franz jig which keeps your hands well away from the blade to avoid future accidents. You can see more about my jig on instagram here Ramon has an excellent video on my jig here?You can contact me by email (bedrosianwoodworks at gmail dot com) or DM me on instagram if you would like more information on the jig or would like to place an order.?
David