[Pete McCrary]

Going off on a slight tangent here:

Removing grips:

To get a grip off, slide the smallest, thinnest screw driver you can between the grip and the handlebar / throttle drum. Squirt WD40 up inside the opening. Wiggle the screw driver around a tad to get the WD40 spread out. Grip will slide right off.

Installing grips:

Thoroughly clean the handlebar / throttle drum with lacquer thinner to remove the WD40 from the previous step. Do the same with the grip. Spread a towel underneath the grip. Pour some lacquer thinner in the grip and shake in vigorously to make sure the entire inside of the grip is coated with lacquer thinner. Slide the grip onto the handlebar before the lacquer thinner inside the grip can dry. The towel is there to protect your plastic in case you had too much lacquer thinner in the grip. You have about 1 minute to perform this operation before the lacquer thinner dries. When it dries, the grip will not move.

Been doing it this way for 35 years. Grips are on solid and tight.