Did more testing, and found out something interesting.
Is the loader is flush on the top of my angel's feedneck, the 5th ball in the stack repeatedly gets hit by the paddles on the drive cone. It is just enough to crack/weaken the shell so that by the time that it does feed, it crushes in the breech. The ball has just enough space to move a little, but doesn't have the ability to stop the paddles, it just keeps getting hit/damaged.
My problem really wasn't indoor related at all, its more of a ball stack height issue. I raise up the hopper about 3/16, and the problem seems to have disappeared.
The paint I was using was small, so I don't know if this played into the issues, but this is a strange problem. Never had this issue with any of my old Halo hoppers, and those were not known for being gentle on paint.
I just wonder how many others are having similar issues with Z2's like this, thinking that the hopper is broken, when its a ball stack issue...
TEAM METHOD - D.O.G.'s Boy's
Custom A1 fly collector (Looking for wonderboy a1 fly)
WANTED: Blue angel A1 grips
Wanted - Angel A1/SB/AR:K parts and markers broken or working
WANTED: Deathstix kits in Purple: http://www.pbnation.com/showthread.php?t=4579745