I have a Still 044 with Stihl chain and Stihl 32 inch bar. Im using a Oregon newest model sharpener grinding machine. Can anyone tell me what the angle is supposed to be on the grinding wheel. Book says most are 60 degrees. Also the degree setting on the holding vise. I did sharpen one chain and eyeballed it and it does ok but I would like to know how its really supposed to be set. Thanks.