If ever you have aftermarket parts in an Axe and it's breaking paint the first thing I recommend is remove them, put the gun back to stock and then test again. Especially if you are seeing paint blown up back through the feed tube of the gun and into the loader.
Typically paint broken by a loader will be seen as small marks of paint on the edges of the drive carrier fins, or as barrel breaks.
Barrel breaks can also be caused by worn ball detents allowing the ball in the breech to roll forwards, or the ball rolling back too far into the bolt, and that allows the second ball to drop down and get clipped by the bolt and then it explodes when it is shot.
Breaks with paint all around the inside of a loader are usually caused by bad paint that is breaking before it even gets to the drive system, or by loading a broken ball from a pod, or from getting shot through a speed feed (oh what a mess that makes!).
Breaks with a lot of paint back up in the feedtube are often due to blow back from the gun and the balls in the feed tube being blown back up and breaking on each other or inside the loader due to the amount of gas bypassing the bolt and entering the hopper.
You can test for that by removing the hopper, putting two balls in the feedneck of the gun and shooting the first one. If the second comes up more than a couple of inches the issue is blow back. I have seen some guns shoot the ball up high enough and fast to break it on the ceiling
I am also not a big fan of the smaller control bores on a barrel. A longer control bore allows you to run a lower pressure and get velocity. These are things that help shoot fragile or lower quality paint better (which we have seen a LOT of lately).
Hence why the latest barrel I have designed, the one that comes with the Sniper has 7.5" control bores.