Thing to keep in mind is if you go ahead and get the correct size, they won't fit on throttle tube unless the ribs are cut down. The tube is made of cheap, composite materials which can break easily if handled wrongly. Personally, it would be easier to just adapt the larger grip then trying to sand / shave off the ribs.Sorry about that. Still trying to navigate the forum and didn't realize I posted twice. When they come in I'll either try your technique if i have the extra time or see if i can just return them for the correct size.