You can always dial up the bias a little, maybe 125mA or whatever you can get within the range of the bias pot. Just watch the temps on O/P devices. For me, I don't mind running them hot, especially since they are mosfets. But I know that many of you prefer otherwise. 125mA will bump the power dissipation from ~3W to ~3.75W. I don't know how much it will drop the input to regulator voltage.