Ok, first off. Hit and expertise aren't a big deal if you don't need to worry about threat issues. Glyph Dark Command in situations when having it hit is critical. Do not sacrifice vastly better items just to maintain Hit/Exp caps, your main goal is survival!
Wear the bracers. They are delicious! Better then the normal 25-man ones, you're lucky to see them drop.
Gems: replace every non-Solid gem with a Solid, except for your head and belt. In your head either leave the hit gem if you really want or replace it with a Sta/Def Enduring Eye. Leave the Sta/Exp Guardians in your belt or replace it with an Agi/Sta Shifting, this is to activate your meta.
Enchants: I don't know much about DKs but shouldn't you be using Stoneskin Gargoyle? It's 2% stamina, that's pretty le crazy...
Shoulders, Greater Inscription of the Gladiator, 10k honor from PvP vendors in Hall of Legends, Orgrimmar.
Gloves, 18 stam or 240 armor glove reinforcements, both LW patches.
Also, Tauren look funny. heheh.