Nathan: Perhaps a little reverse roll playing could help. Put HIM in a situation that he has to recover from rather than you recovering for him. Of course, three mistakes high, but put him in a situation that you can recover from, but make HIM recover while you stand by on the buddy box. Perhaps that will 'shock' him into realizing how much stick is necessary to do certain maneuvers.

Also, if you are both using similar transmitters, ie. both on DX7's for instance, dial in some reverse exponential (a few percent opposite than what you would put in to soften the controls) and let him fly that way for a few flights, then slowly remove it.

CGr.