I do have a video that Dirty Harry sent me but even that looks frustrating to install the o-ring. It's the one, video, that uses a sharpened dowel. Of course I can't find a dowel small enough down here to use. So I'm hoping someone here has a method that will work for me with out to much frustration. I have the o-rings being brought down from the States next week, hopefully. but I'm hoping to practice using a SAE ring so I learn the process. Just my luck ... The package of spares that came with my Cricket has lots of o-rings and other seals but not one for the 22 breach. Thanks for any advice.