The UFO expansion bolt for the bar end looks like an old bicycle handlebar neck bolt, split on an angle to expand when tightened. There is also a shoulder that looks like it rests against the bar end. When I trimmed the end of my handgrip and throttle tube I see the plastic throttle tube extends past the handlebar by 1 1/2 inches. No way the expansion bolt is going to work. Am I supposed to push the throttle tube flush with the bar end? Did the previous owner move it? Do I need to cut the LH bar end to match? Buy a new bar? I'm stumped.