Fantastic product. Local company quoted $275 for repairs, tried this first. Only works on marble! Follow the kit instructions, for my problem I used the polishing beads for 30-40 seconds with some water in the bottle, then 2000 grit with some water for 3-4 minutes, then I had to use 1000 grit with some water. some water for 3-4 minutes, had to use 1000 grit a second time for 3-4 minutes, then 2000 grit for 3-4 minutes and then polishing stones for about 30-40 seconds. Clean with water and a…