I have noticed a weird phenomenon occur which seems to be a constant. When I mount a knife on the riser clamp in the PP2 and set the angle of the guide rods with the stones in place to say 18 or 20 or whatever angle I decide, the width of the bevel is wider on one side than the other. That is the width measured from the apex of the edge to the bottom of the shoulder of the bevel.

I know that the clamp only moves on one side which causes you to have to compensate and use the angle cube to determine the correct angle, however using the angle cube and very carefully checking both sides to be sure they are exactly the same, (say 18 degrees for example), it seems like the bevel should be exactly the same size on both. I can't seem to understand why this happens. I am not math wiz but it seems like they should be the same. Yet they are definitely not, even just by eyeballing them, without calipers, it is clearly different.

Any ideas? Is it human error or is there just a difference due to the riser clamp not being centered evenly between the rods?

Do you have the same experience or is it just me?