I use a King, 1000/6000 and a 12000 for finishing, I have found that the King stone doesn't last long on the 1000 side as I lap about every 3rd or 4th hone. Every time I lap I loose a lot of stone, I only had this stone about a month and have about 1/2 in left. I am thinking about getting a Norton next stone as maybe it will last a little longer. I made the mistake of getting the smaller stone and wish I got the wider stone, 3 inch. I can relate to loosing a edge when I set my bevel and then go to the 12k Chinese stone and wondered why myself. Maybe we are polishing the edge to much. It would be interesting to know for sure what is happening.