I personally wouldn't use the stephen bess method because to me it sounds a bit harsh on a new engine and the other method I know works well and is used by a lot of people to great success. Think of it like this you are cutting a line into a piece of wood say, now the stephen bess method uses a chainsaw, quick, effective but there is a big chance you're going to cut too much much, now the tradional method does this with a nail file, takes longer, but just as effective and there is next to no chance you are going to take too much away. However this does seem to be down to personal preferance or wheteher you would like to try out a new method.