6L80 Transmission noise 2011 Tahoe

[2011SSVTahoe]

I would like some input on what part of the transmission might cause this noise.

Reverse Grinds hard
1st a little noise
2nd a little noise
3rd, 4th and 5th no noise at all
6th whines.

I have taken the transmission apart and found the input planet gears are scored.

Clutches look GREAT.

Have not dismantled the pistons yet.

We heard a bang in the transmission then metal grinding then it got quieter and all the above issues appeared afterward.

Any help, input would be appreciated. I have not got the 2-6 & low rev support removed yet.

 

[2011SSVTahoe]

Found the issue Output planetary had a few teeth sheared off. Not sure what caused it to shear.