got em on good! for future grip installers. Place the grip at the end of the handle bar, insert air hose in the end closet to you and squeeze your hand on the grip end around the nozzle. Apply air. This will blow it up and allow you to easily slide them on. Be careful when the air nozzle starts to get close to the end of the handle bar if you have heat tape on, you dont want to catch that and separate it from the handle bar. you might need to plug the other end if interior of bar is continous to other side.