Look at how the chains are kept together at the bottom. Mach V has two rings. The Chainstar only has one.
That large bottom ring is the reason I don't like Mach V's.
I have seen this spit out scenario more times than I can remember.
Disc comes in just over the cage, strong side, on a hyzer.
It hits the chains right at the smaller, top ring.
Disc pushes the chains to the pole, as it slides down a bit.
Disc hits the larger bottom ring
The chain assembly swings back, and the bottom ring flings the disc right back out of the basket.