Sorry for the late relply. I just received my brand new Pro4 4600kv to try because I haven't heard back from the person I bought it from and I'm impatient. It's definately better again but I still hear a slight noise before the motor spins up but it does get up to speed and drives normally. I'm going to try messing with the Neutral Width setting and see if I can improve it at all with that, I'm done for tonight. I haven't driven it too much, only around the garage but I don't think it's getting hot like the last 4.5 Redline I used.

Wiring is fine and I'm seeing the signal lights (567) on the RX8 at the sensor is working. Using Mode 3 on the Motor Type (brushless, fwd/brk/rev with delay)

I have an 8ight E with an RX8 and T8 motor and I don't hear any of the same noise I'm hearing with the SCTE.