? Breach Seal o-ring install and other issues

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.
 
You're right Chuck, it was easier to insert the o-ring and seat it with the barrel off. But getting the barrel back on has created a new problem. The screw that is suppose to set in the dimple is concave not pointed so it won't sit down in the dimple to set the barrel. Even if I tighten the screw the barrel still turns. I feel really inept now. I just don't see how it's supposed to work without a pointy end on the screw. HELP????
I'm using Ernest Rowe's video,
as a guide and he just aligned the dimple and screwed it in carefully. I aligned the dimple but it doesn't work out like Ernest shows.
 
Hey Chuck, Pretty hard to think I can laugh about the Cricket right now. I loved the gun when I first got it and got it zero'd in. Even had a couple nice colored dove meals. But for awhile now it seems tor I seem to be jinxed. I'm trying,again to quit smoking so I'm just a little shot on patience and know better to work on stuff when frustrated. This new thing with it not cocking kinda put me over the edge and have enjoyed a few smokes after putting the gun away for the day. Any ideas you may have will, as always, be appreciated.
I like your positive attitude and looks forward to your advise when you have the time. Here's a shot of where I live in Baja from the air. I'm the last house so you can see I have a wide open area to setup targets and enjoy shooting. I'm really anxious to get more familiar with the Cricket.
 
I'm gonna calm down for a few days and then take another look. Sending Ernest/Sniperlabyo a PM sounds good if I can't resolve the issues.
Thanks
AZBOBCAT, yep once I had the barrel off getting the o-ring set was just a mater of being calm and got it seated in short order. I love my place down here and I have a Polaris Ranger I explore in so the shooting opportunities are endless.