Chip....good for you!! I too have lost 130 lbs....over two years. About a pound or two a week. I've always read, and have been told that any more than that and what you were saying is exactly what will happen. Your body will begin to store fat.
I still have about 40 lbs to go to get to where I want to be, but at a pound a week or so, I'm in no hurry to get there....as long as I have fun (riding all the time....and some other forms of exercise a couple of times a week).
So far I have found, and fallen in love, with biking, and then running, and then just getting, staying and continueing to be fit.
Find what works for you, stick with it, and most important know that your not alone in this. We're all in this together and I'm pulling for you (as Red Green would say).
Be well!!