There's a diagram in the manual (which you can download here
www.angel-owners.com.) I'm looking at my manual right now, and it looks like the stock order is :
Bottom [end of reg with 1/8" air fitting] ) ( ) ( ) ( Top [end of reg with threads for the ASA]
That's six springs, just to save you having to count, by the way.
I don't know what TAG is, but I haven't personally seen anyone have any troubles yet. I know what causes the HALO probs, and the dual ball detents, in theory, should do a better job of holding the balls in place instead of letting them roll back in the breach. Like tom said, you could always extent the soft nose on the bolt. Too bad that wasn't an option on my IR3. Believe me, I know what a bad HALO (or bad angel, whichever theory you subscribe to) can do, like I said, my IR3 was a blender with it.