OK, here's a tip. Make a little box out of cardboard to put inside the existing "primer catch box". An ammo box or cereal box works well for the cardboard. It will be taller on the right side than the left. Work with the shape until it is a good fit and it catches well. When you get it right, it catches almost all the primers and is much easier to empty.
If your ball handle comes off, drill a small hole through the top of the ball for a vent, then use JB weld to glue the ball back on. If you don't drill the hole, it will be very hard to get the ball on there because you will be making an air compressor piston.
That was 2 tips.