Trev, if your brake is that drastic, what I'd do is reduce the pad-to-disc contact area by grinding part of the friction material away from the end (or middle I guess) of each pad. Steady is good here. You don't want a weak brake (mine is for some reason. Probably got silicon spray on it). Also you have to ensure the pads are even.
Another variation I haven't tried is cutting vertical slots in the pad material, again to reduce contact area.
It might pay to have a spare set of pads handy in case of experiment overkill...
I don't know how altered pads react under severe road pressures, so be careful mate. Good in the dirt, though.