So how much of the shaft should you see going into the transmission? Right now I think I've got about 1/4-1/2". It doesn't channge much even with the rear jacked up vs. dropped (probably due to the torque arm).
Are there signs that the shaft is too long while driving?
I think he's speaking of the distance between the end of the yoke and back side of tail housing. 1/2" should be fine if I'm reading your question correctly based on you asking if the DS is too long....
If you've only got 1/2" of the slip yoke on the output shaft, you're WAY to short.