Hello everyone! First post here. I recently purchased an Oregon 520 grinder and finally got to grind my first chain today. The chain is a Stihl semi chisel .325 pitch chain. Angles were 60, 30, 0. My question is how far into the gullet should I take the wheel? In the pic below I basically took it to where it is in line with the “flat”. I know as I grind this chain more and more I probably won’t be able to go as deep because I’d hit the drive links. Any advice or recommendations are appreciated. Thanks in advance!!!