I agree that this part was designed poorly and is my only complaint with the gen5's. I modify the levers by bending them back in to sit more flush against the frame. From the factory they stick out about .020" farther than the prior gen slide release levers, and cause issues with anyone who uses a high/aggressive grip. I also adjusted my grip slightly to move my support hand slightly farther back on the grip so that my support hand thumb bridges over the slide release between my thumb knuckles. The base knuckle of my thumb used to contact the slide release lever, but it never caused any problems prior to the gen5's.