Well I broke the gear shaft on my stock one, and since it was a 2070, no local shops had parts. So I ordered that one and then found a gear set online and ordered it. I figured I might as well use the servo with metal gears rather than just keep breaking the plastic ones.
Anyway, I changed the batteries in my receiver and it works now, but if it's sitting still and I turn right, the servo turns the turnbuckles, but the wheels barely move. I haven't actually tried driving it yet though. If it doesn't turn worth a crap, I'm just going to fix my stock servo and use it.