Helllo all Im trying to find out the best and safest way to use the centers on my surface grinder. First, where in relation to the wheel to you want to have the centers, forward or closer to the center of the wheel? Also when taking cuts, how much would you do to be safe? Iv gone as far as .001 and it makes me a little nervous, but then again Im cutting stainless 40rc. Perhaps I the wheel might be too soft as its a J hardness. thoughts?