So, I've had half ton front axles apart around a bazillion times. I've had a couple 60s apart. All of them, whether automatic hubs, manual hubs, or drive flanges had a snapring to keep the stub shaft pulled into the spindle. The only manufacturer of drive flanges that appears to do this is Warn. http://www.pirate4x4.com/tech/billavista/PR-35Spline/index5.html If the slug is allowed to move around in the hub and/or the shaft is allowed to move around in the slug then what locates that axleshaft? If the stub is allowed to go in and out of the spindle you end up with mud in your spindle bearings and eventually into your wheelbearings. Wheelbearings and spindle bearings are cheap on half ton stuff (like $40/side) but D60 stuff isn't so cheap. If the inner shaft ends up being on the short side (like many aftermarket ones are) then that shaft can move around enough to eat spindles also. If something doesn't keep the centerline of the joint in line with the kingpin inclination axis then steering can be a chore as well. Am I crazy or is this a severe overlooking by most of the drive flange manufacturers?