I'm 5'6" 179 - had my bf done via DEXA scan not too long ago and I was 143lbs lean mass and 20.3% bf at 181 ish. If it helps, my lifts at 186 lbs were: Squat - 363, bench - 225 (missed 3rd attempt), deadlift - 363.
At 1900 calories, I do have to drop my carbs quite low to hit my protein intake (now trying for 200-225 grams) - I had roughly 30 grams carbs with breakfast, then it was just whatever I got from veggies today for my other carbs (3 servings of mixed veggies). The rest of my food was all protein powder/pork/chicken/salmon/almonds.
1900 calories was calculated from taking 400 calories from what I perceived my maint. to be (2300). One area I think I may really be screwing up is that I'm also doing cardio 4 or so days a week to help burn fat off, but have not increased my calorie level accordingly. 1900 was based on very little to no cardio.
Attached is a pic from the competition on 9/11 @ 186 lbs