Same problem as born2fly, my bird keeps trying to step up or try go for my nails that I cant even get to his wings. Tried the "dropping" method too but he also just flaps. I can manage to get him to lift his wings slightly when i tap them from underneath. When hes relaxed and preening and im sorting out some pinfeathers for him he has no problem with me lifting his wings and handling him anywhere. Just when it comes to training he puts up a bit of a fight for me to lift his wings without nipping. This is why Im stuck with the aviator now as well as I can get it over his neck and all but the moment it comes to lifting his wings he refuses again.
Been trying to work out this trick for ages and Ill get there slowly, as always your videos always help big time, been waiting for this one. Many thanks for all the help and advice