That's what broke on mine at the shootout ( propshaft
inside of the gear)

The pitted upper gears are a common thing on these

Never had any problem with the shifting mechanisms.

If you're on the same schedule as me, you'll be
breaking a vertical shaft next

$ 1600 for a upper gearset, $750 for a propshaft,
$ 3k sounds about right

I broke a shaft inside the gear too & I did it at LOTO. Must be something in the water.