This is going to sound counterintuitive, but I would suggest increasing your calories to 1800 - 2000 for a couple of weeks in addition to your daily hour of exercise. A man your height and weight should not be eating only 1300 calories a day. That's not enough fuel to keep you going. Heck, I'm 6 inches shorter than you and *I* eat 1600 - 1800 calories a day while losing consistently. If you were sedentary, then maybe 1700 - 1800 cals would do it, but adding exercise (cardio and strength training, I assume?), you'll have to keep your body fueled with the right foods. Plenty of protein and veggies with some carbs.
Hope it works out! Congrats on your 32 lb loss so far and good luck with the rest!