I weigh about 175 right now, and I'm 6'1. A month or so ago I was 185, and I seem to float between 173 and 180 depending on water weight (I swear, I was 173 before I went to bed one night and woke up weighing 180.)
Actually, my bench performance sucks right now, not so much due to strength as energy. The bar doesn't feel any heavier than it did 6 months ago, but I can't do as many reps. I've been using thermogenic fat loss supplements which I've heard can burn you out, so that may be part of it.
As for cutting the carbs, I was under the impression that you needed about 2 carbs for each gram of protein for real gains.