Steering coupler and master spline questions

I just got home and went to go take pictures of it upon inspection, the part cleaner I let sit on it while at school did it's job. The second master spline was actually splines from the last coupler stuck on the shaft and it took part cleaner sitting on them to separate it enough to scrub it off.

Sorry for wasting y'all's time

Thanks,
Damien
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Hey Damien, like others have said, there is something to learn every day about these old girls of ours. I read through all kinds of threads just to see what I can learn.

I see you are at Ft Hood. Thank you for your service!!! I started out Army, but switched to Air Force. My son did 3 years at Ft Stewart and deployed to Iraq as an 11B.