I just got my mag-9000 today. Let's just say that for a guy who has been sharpening blades for 10 years on a bench grinder, half of that on a really cheap grinder, I am quite the happy camper! This thing almost, I repeat almost, makes sharpening blades fun. I hate sharpening blades so that oughta tell you something. Anyways, my question is this, I believe the manual says that you adjust the sharpening angle by cranking the handle. Do you need to adjust this as the wheel grinds down. As I see it, the wheel is going to shrink in diameter and then require me to lower the wheel. Does this change the angle? Do I need to just keep an eye on this and adjust accordingly? Thanks in advance on what is probably an elementary question.