Bob,
I don't remember your friend's name, but I've seen thousands of people during air shows. I may have passed him somewhere along the way. (Who knows?)
It sounds like you've gotten the barrel band fitting correctly. There's almost a science to getting the action seated though.
(They can be finicky, and if you don't get it right your accuracy will suffer because of this alone)
The key is to get the rear under the recoil plate correctly, then the barrel should just have just a little tension before laying down. As you've probably noticed, the only thing holding it is at the rear and the barrel band section at the front. The rest of the assy is free. That's why I prefer shooting carbines that have the type 3 bands with bayonet lug. They remain pretty stable.
After you take one apart it may take a while to get it to seat properly again. With the front band off so the barrel is free, I put the rear under the recoil plate and then bump the butt of the stock on a carpet I have in front of my work bench that's laying on a concrete floor. Just bump it enough to get it to seat and not bind when you lower the barrel into the barrel channel of the stock.
There's probably better descriptions than this, and other methods. I think INLAND44 has written a good description before and I'm sure others have ideas and/or better written instructions than I've done, but seating the action back in is important.
I think you'll really like this group. There's a lot of good guys here with a ton of knowledge. Just read along with the posts, ask questions if you don't understand something and you'll learn a lot -
Most of all, have fun! That's what this hobby is about.
~ Harlan