OK, quick call to the Spektrum support line and we know it doesn't matter which port you plug into to power during binding.
I have a question on mixing. Is there a way to set up a weak negative relationship between the steering and the throttle that will reduce throttle input during high steering input, which will roll more throttle on as the steering input is released? Essentially pulling throttle during tight corners on low traction surfaces like traction control...Anyone thought about this yet? I got my DX3R last night an read through the book, this jumped out as a possibility.