I think my extra weight around the middle is causing iPisoft to think I'm leaning backward a bit, lol. Guess I'll have to suck in my gut when I'm recording.

We had a similar problem, at first the results looked like we had used Quasimodo as an actor and we tried to correct that by trying to walk with an unnaturally good posture but actually we got better results when we shortened the actor in iPi Studio by 10 cm. It kind of makes sense, however it might have a negative effect on feet tracking even though we didn't notice. Anyway, worth a try I think.