I use compressed air to blow them offf, then a strip of two sided masking tape, same as a golf club grip installation, to hold the new grips in place. Neutralize the adhesive with varsol or something like that, put some varsol in the grip,push the new grips on, or use the air to slide them back on. When it evaporates, they will be stuck pretty good. But will blow off again with air, tape peels of fairly easily.