If I had it wired backwards (wrong + and -) wouldn't I have to reverse the servo on my radio? I went from a Futaba to an Airtronics and I didn't have to reverse it. I don't think my servo is the old style wiring anyway, it doesn't have two black/a brown wire. It's blue, red, and then black, in that order. I'm guessing the blue is the ground, and the red and black are + and - respectively. If that's the case, I have it wired correctly. I'll double check in the XXL manual.

I'll have to check my servo saver, but I don't think its the problem. It's brand new. And why would I have the problem under acceleration and then not have it during cruising? The servo saver wouldn't seem logical, but I'll check it none the less.