I was re-profiling one of my Buck knives and it was taking forever with the 140 grit diamond stone, the stone is about 2 years old and maybe wearing a bit, I ordered the 50 grit beast and holy crap, it's sounds like i'm dragging the blade down a gravel driveway, it took about 1 minute to get a bur on each side, do you think I should order the 100 grit stone so i'm not gapping from 50 grit to 140 grit or do you think the 140 is good enough to take the scratch pattern out of the 50 grit? I'm thinking because the 140 stone wearing over time, I would say it's not a 140 anymore but maybe a 200 grit, I don't use a lot of pressure on the stone but over time I still think it's wearing, I don't want a mirror polish on my work knives, but I would like a mirror polish on my high end knives that I don't use that much, if you have an opinion I would like to hear it, thanks.