I use Superglue if the grips aren't already quite tight. It acts as a good lubricant to slide the grip on and it holds well. With some grips you need to decide where you want them to end up before you push them on because you do not get a second chance if you use the glue and you can not stop pushing until they are fully seated, but other than that it works well. To tell the truth I've never had any problem using dish soap back when I used to use it either but then if the grips are tight in the first place all you really need is air, as noted above.