Make sure you start fresh with ONLY the open hats you want (and foot closes) in the groove that you change to a style. Make sure you add a priority control to the groove element created, and turn it all the way counter clockwise. iirc it didn't work if it wasn''t all the way.
Then add the other elements as needed from other styles... like I added the classic kick and snare elements, and the 8th rock hats.. and rely on the drummer for any other frills and fills.