The instructions are available on line...
I have the documentation that came with a Towerpro 60Amp Esc which pretty much worked for the 25A version.
Here is the link
http://www.hobbywing.com/upload/esc-e.pdf
You also may be getting poor output from the motor because the Towerpro ESC timing is not optimal for your motor.
This made a BIG difference for me... the ESC defaults to timing for the INRUNNER, which does not work very well.
The default cutoff is "medium", this is calculated as a percentage of measured total voltage (the ESC calculates the number of cells to use for this) and should be fairly safe.
Re: Weight
GET A BIGGER BATTERY!
Never add unusable weight to a plane if you can avoid it... I use the 1800mAh and 2200mAh that Nitroplanes sells, which work very well with this plane.
Who did you e-mail, Raidentech?
Did you purchase it through them or from Nitroplanes?