It's often difficult to reconcile the behavior of the TOS Klingons with the more "honorable" TNG variety.
Didn't Dayton Ward explain that in In the Name of Honor
And one of my first DS9 pitches was "Terok Hel," which was a thriller set on a station of the same design as DS9.
Interesting.... Hey, Chris, ya think you could recycle that idea some day, only set it on Empok?
Or was the story too similar to the episode?