Pinion Gear... Is this worn?
 

Before you say anything, YES IM A HUGE NOOB.
This is probably one of the first times opening up a diff, or actually looking into gear internals.
I'm retarded.
Anyways...

I took a look at the pinion, not sure if it's machined like this (Kinda goes down) then it LOOKS like it's wore down..

Anyways, here's the pictures in question..
http://i53.photobucket.com/albums/g6...4/IMG_4724.jpg
http://i53.photobucket.com/albums/g6...4/IMG_4723.jpg

Here's the rest of my findings..
A bearing that is now in very bits of pieces..
http://i53.photobucket.com/albums/g6...4/IMG_4721.jpg
http://i53.photobucket.com/albums/g6...4/IMG_4722.jpg
http://i53.photobucket.com/albums/g6...4/IMG_4720.jpg
http://i53.photobucket.com/albums/g6...4/IMG_4725.jpg

It certainly looks like it's worn, except I'm not 100% sure since I've never opened up such stuff..

I still need to crack open the front diff and tranny to take a looksee on any other wearing parts.. I guess this is the downside of running a Medusa 36-50-3300kV on 4S in this baby..

I also need some new grease to make it all happy, any suggestions?

I'd Say So... Looks like %20 left... Mesh it with that ring gear... It should be full contact..