Rick,
Glad you had a good first flight. I saw that a few others mention they had the same problem with their WM Cub wings. I went over mine well when I went to the LHS to pick it up. I'm sure you'll be able to get the twist out.
If you have to give it a lot of up to get off the ground I'd say maybe try a different prop. One that will put more air across the control surfaces.
:bananahea