Dark Territory-The Heart of the Matter by DarKush
Heart of the Matter predates DT: The Crucible, which is still being posted. You don't have to read the Crucible to understand this story...I hope.
Historical Note: This story takes shortly before the Klingon Civil War shown in the TNG eps. "Redemption 1 & 2"
The Heart of the Matter
This one has a moral!
How to stay alive by walking the tightrope between cultures!