I’ve done Mixed Grill. It is indeed wrong in the guide. The first pitch goes up and leftwards along the lip of the cave, with crux being the move above the lip to the first anchor. The second pitch continues up and left. It is at least a 20m rap from the final anchors to reach ground, and is worth two stars in my opinion. Grade 22 is right…. but it is pretty sustained. Second pitch is particularly sharp, and there is a bird’s nest in one of the caves, which should not be removed, or climbed if the bird is nesting.