Ok guys, I guess that now is the time for you to make me look foolish. I have owned two or three stepped reamers, some that I have bought and some that I have inherited. I have the same problem with all of them. The resulting hole is either too large or too small. I have tried to use them on engines from .15 to .90 and different manufacturers all with the same result. It makes me wonder if they are made in two different specifications, one for SAE and one for metric. So the solution for me is to give them away to someone that is not as picky as me and just use the tapered reamer. I use a high aspect ratio reamer and carefully ream each side until the prop slides on with a snug fit and I always ream before I balance. Am I the only one that has this problem?