I mounted this with the anchors that came with the articulating wall mount that's rated for this TV, but I noticed they started sliding out of the holes after about an hour.
What are some anchors I can use that 100% guarantee that this won't happen again? Ideally they would still be removable solutions, but if that sacrifices safety then I'm willing to use a more permanent anchor. Any professionals here that do this all of the time?
My first thought is to obviously add a lot more holes and use thicker bolts. Are knurled steel anchors a better way to go with this setup?
https://www.amazon.com/Premium-Plated-Carbon-Knurled-BCP1003/dp/B084BVYMMD/
Edit: This is very thick limestone, not a facade. Each hole took about 15-20 minutes to drill. It's a metal fireplace that is enclosed in stone. There is a ~5" wall on each side that aligns with the center and the limestone sticks out about 10"-12" on each side.