Reply to "Axle repair question"

Hmmm. Well, what I've observed seems different from your description, if I understand you correctly. On these axles, the u-joints are 45 deg. off from each other. By this, I mean that if I viewed an axle assembly from one end, the center T of the u-joints are not in line, but rather one is "+" and the other is "x". This is true of both axles. I did notice a couple of metal weights (I assume) welded onto the yoke areas (non-flanged yoke) of one axle assy. On the other axle, there were added weights on one of the flanged yokes.
On the orig. axles in my car, the center T of the u-joints are alligned, ie. looking down the length of the axle, both u-joints are in a "+" orientation.
Upon closer inspection of the new 'used' axles, I found an arrow stamped into each half. These are not lined up, but are 45 degrees off from each other, so that if I alligned the arrows, the center T of the u-joints WOULD be alligned.
Is there any practical method of checking an axle to see whether it's balanced? Is it not practical to use these axles?? Any thoughts? Thanks. Paul