Ok so last couple days put some work in. I did like
@John Parks suggested and drilled out the holes in the diff case. Used 11/16 bit and drilled out each hole. Then carefully ground down the outer case of the diff for the four nylon lock nuts. I fully cleaned out the diff, refilled it with 20k diff oil and reassembled it. I then put it back in and did the brass bushing mod as I originally intended to do. Nicely coated the gears with Fast Eddys and sealed it up.
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One thing I found with this rear steer kit is it appears they substituted some of the button head style screws for socket cap style. Also was missing a couple screws. 4 total. As being as I am super OCD, I ran to my local Ace Hardware and picked up all the hardware to ensure it all matched the front and the couple I was missing. Got the bulk of the rear steer done. I ended up having an issue with the servo saver assembly as it is aluminum. I didnt put on the required O-ring as it was missing, and I missed it. So after assembling, I went back to disassemble so I could throw an o-ring on...horrible idea. It bound up and stripped.
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I also found that I must have smacked my rear disc brake on a rock while bashing as my brake disk is bent thus causing bad wear on my pads lol. Then to top off my testing of patience, as I was installing the rear end, one of the shock shafts pulled out. The screw holding the piston to the shaft backed out and it pulled right out. So I am going to rebuild all 8 shocks. Lastly, the shock ends that support the ball link are threaded plastic. Couple are backing out and I found a cracked one. So going to replace them as well as needed. This was going to be my winter rebuild but doing it now for sake of sanity and knowing its done right. Once I get it back together fully, do a few fun runs with the new rear steer, going to rebuild the front diff with the diff mod and brass spacer.
So until my next Primal order arrives...this is how she sits now.
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On a solid note, got the 7PXR all programmed up for 4ws, wire covered with expandable wire cover all the servo wires and got every cleaned up and nice to look stock. New servos are working great on the new receiver. Just need the servo saver so I can tie up the last few links of the steering.
