The orange rubber handle on the end of my throttle lever always comes loose and then comes off when pulled or pushed up or down. I bought a new handle but it did not come with installation instructions. I just pushed it on as hard as I could but it still rotated and came off. I don't know if I should use loctite or maybe, wrap metal lever with double faced tape, fill handle with lighter fluid and push on or use epoxy glue. Does anyone have a similar issue or know how to install? The lever is hard to move up and down and I don't know if that is normal or not either. Thanks.