So I got a Blazer a week ago, and have had lots of fun breaking and fixing it
2 lessons for would-be Blazer tinkerers:
1. If the ball detents look loose, don't tighten them. They are adjustable instead of seating all the way tight. I adjusted mine by looking into the breech at how a paintball sits and how the bolt moves past them. The ball should stay put, with the detents far enough out to interfere as little as possible with the bolt.
2. If you remove the trigger frame, be sure to push it forward when reinstalling it, as is recpommended in the manual. There is enough play in the screw holes to affect the timing. I got it pretty screwed up and it took a bit of playing with it to get it back in time.
Hopefully this will save someone a little bit of frustration
w0se