I purchased this product to replace carbon cages I was using because rear bottle would occationally bounce out. Purchased King Cages and new Camelbak bottles. Bottles lean sideways in cages and when adjusted and turned in cages will continue to lean when on rough road.
You may need to bend these cages a little bit to get a snug fit around your bottles. I use the King Stainless Cages and the Camelbak Podium bottles without any issues and with minimal marking.
If you bend these cages and continue to have ejection and leaning issues on rough roads, you might consider some very tight fitting cages like the Velocity Thermoplastic Bottle Cage. As an added benefit, they're about 10g lighter than the King Stainless Steel Bottle Cages.
Western Bike Works
I have two of these installed on my road bike. They are hand-made in Durango Colorado of American-sourced steel by a small business. If you are not carbon-obsessed, this is the way to go!