Help with my Mamba Max

[BrianG]

First issue, I wonder how old the firmware is? Early FW versions had trouble with slotted motors. But that was a while ago, so not sure on this.

For the second issue, reduce the throttle deadband from within Castle Link. Can't remember the exact name for this, but it's pretty easy to tell. The only downside to this is if the pot in your transmitter is not the best (or "drifts"), the ESC may have a hard time finding neutral to arm.