Hi Josh, dont listen to those hecklers, they're just a couple of piss tanks.
Anywho, as we all know, we get better performance, longevity etc. when we do not adhere to manufacturers specs.
So in view of that, grind at 0 degrees, your boards will look like plained lumber.
For an exhaustive lesson on grinding for milling, get Chainsaw Lumbermaking, by Will Malloff, published 1982, by Taunton Press.
Although out of print, you can find one at
www.abe.com
If you are into learning from a profusely illustrated text then this book is worth its weight in gold.
Malloff is from Oregon and specializes in milling big wood with an 090.
John