Thank you all so much!! Just had a day removing a large black oak that fell on a walkway. Ran three chains that i sharpened on the grinder and they cut like new. Big chips, and stayed fast and sharp through the whole tree! Im still confused about centering though. I put a straight edge in the slot and adjusted it correctly but cant wrap my head around how that adjustment would change, ie the strait edge was in the center of the wheel, the center is the center no matter how much stone you have left...
That's great that the chains cut good for you, and they will only get better.....it's nice to know you can sit down and touch up 4-6 chains in a fairly quick time with the grinder.....don't get me wrong I still sometimes touch up a chain with a hand file, but I honestly use the grinder for 95% of my sharpening....I love just touching up the chains with the CBN wheel!!!!
So what angles are you using....I keep the head-tilt angle at 55 for all chains, but I change the top plate angle according to the chain brand(Stihl or Oregon)....I also have been using the "tilt" feature on the Oregon chisel chains, and although I don't know if helps or not, the Oregon chisel chains I grind cut extremely well!!!!
Do like philbert said and put a new chain on your vise, then try to adjust it to were the wheel will contact the chain on both the left and right hand cutters....