74 power wagon dream truck...

Well I got home from work today and can't leave well enough alone. I never verified the oil in the differentials. They were supposedly freshly rebuilt and every indication showed that. But I never pulled the plug on either one of them to see if they were full of oil or what the deal is..
I pulled the rear plug and oil came out and looked perfect like brand new honey... it's tilted up a little bit now with the lift kit so I expected if there was it would come out a little...
The front seems tilted down just a tick and when I pulled the plug it was right up to the threads...