GM 12 bolt truetrac help

[Chilly178]

Ok so stupidly I already junked the old axles so I don't have anything to compare, but I looked at the length of the shafts and they are listed as 30 3/4" which i believe is the standard. I also tried removing the new C clips and putting in the old ones to no avail. I called Eaton and they informed me to make sure the axles are all the way out, and if not it could be two different problems/measurements. Either the butt length of the axle is too long or the groove cut for the c clip isn't wide enough. The axle end play should be around .015". I don't have a stock axle to compare it to. I'm thinking i could take some measurements when I get home, does anyone have any 67 axles laying around we could compare any differences?