Drift Mode Problem

Hi Guys,
I am having problems in getting Drift mode to function properly.
It has been going on for a few weeks now, in that time I have tried just about everything.
I am using AC3.1-rc5, Mode 1 radio, latest MP, APM 2.5.2
In drift mode, I pitch forward and use the roll stick to turn, problem is , no matter how much roll I use my quad will only turn a few degrees left or right, as I have said, I have tried everything I can think of,
re calibrate radio, compass, ACCL cal.

I also have another quad with the same hardware, that one seems to fly great. (not sure if it has exactly the same firmware, it says 3.1, but doesn’t have the “rc5” next to it, if this makes any difference.

Can any one offer any possible solutions

I’m wondering about drift mode using a mode 1 radio. According to the manual, drift mode only works with mode 2 (throttle left).
Are you using drift with your mode 1 (throttle on right)?