I'm roughly around level 65 or so and I'm in Northrend. The trouble is, it seems my leveling has slowed tremendously since I've been here. I'm wearing Heirloom gear that has been upgraded to tier 2. I'm averaging about 500xp per kill on some of the mobs and the quests are giving about 10k xp. Is this about right? Maybe the mechanics of the game change once I get out of the vanilla areas. Anyone have any ideas?