I'm having the same problem...full throttle, no flight.

I crashed yesterday (not terribly hard) and broke the tail motor mount and both grips. I replaced the parts, making sure the grips are installed correctly (ball to trailing edge) and now I do not get flight, even at full throttle. Could the impact have thrown off all off the servo links? Doubtful.

Any other ideas?

Also, wouldn't you lengthen the pitch links to get more pitch?