Originally Posted by wurlitzer46
There does seem to be a little fluid seeping from the gap between casting and tube. Will that seal with reassembly?
If it is leaking where the Left arrow is pointing the answer is No. It definitely should not be leaking there.
If it is leaking where the cast carrier housing bolts to the front of the axle housing the answer is Yes. With a new gasket.
Originally Posted by wurlitzer46
I remeasured from the backing plate to the front end of the tube 71 3/4" on the left side and 73" on the right.
I think the only thing that matters is that the torque tube is at a 90 degree angle from the axle.
To do that you could use a large square or the 3, 4, 5 Rule

But if the torque tube is leaking where the Left arrow is pointing I would say its time to scrap it.
You should also read this Thread to gain more insight.