Sloped foot for Geuther Tamino highchair

We are very happy with our Geuther highchair but unfortunately the designer didn't consider floor-protection; the front-"foot" has an angle of ~10° what renders the application of sticky felt pads impossible. This foot (mirror for both sides) creates a flat surface to apply pads of almost any size.
Who likes the idea but not the design; the angle is approx. 10°, the leg is 22mm wide.