I have 2 1/18 rc's running on castle creations sidewinder sport esc/ brushless combo. Both are not working and have same symptoms.
They either: power up, beep twice and die or
power up, allows calibration for throttle w/ green light but gets
no response when calibrating reverse.
The red light just keeps on blinking.

Tried to contact Castle but they have not responded yet. Was hoping to play w/ them this weekend. Any help would be appreciated.