First off, since this is a RX8.2 thread I'll start off by saying I replaced my SCT-Pro ESC with the RX8.2 and the problem went away. I also couldn't be happier with this ESC, I love the throttle/brake feel and the data logging. And I really like the HV BEC. I run the ProTek 150T on my SCT410, and at 7.4v, I get a crazy amount of torque with lighting speed (I don't have the specs handy, but if you look them up I can't find any other servo with faster speed AND more torque). I have so much torque I can right my truck in seconds when it is lying on its side just by turning the wheel and giving some throttle (the force of the wheel turning into the ground pushes the heavy truck up and over to be right side up).

I am still running the HW 4700kv motor, and I don't think any other motor would out perform it. My advice is to keep the HW motor and only replace the ESC. As far as I can tell, this combo (Tekin ESC and HW 4700 motor) is as good as it gets.

As for why I was having the problem on the SCT-Pro, there could be a number of reasons since it was only a recent problem. For one, I was getting power for the steering servo direct off the balance plug on my 2S battery. This may have caused a brown out of some sort, but I am not really sure (here is where I plug the awesome HV BEC of the RX8.2). The problem also could have been from some loose Solder connections on the SCT-Pro (I tried to re-wire but the pre-soldered posts were a total pain to desolder, so I had to give up). I did notice the problem went away when I went to a really low pinion gear (14t) at a low punch setting (2 or 3), but then the SCT didn't have enough power to counter the nosedive on jumps. Since I had my eye on the RX8.2 anyway, the decision was easy. And I couldn't be happier running Tekin for my ESC.

Hope this helps.