Need help with front axle replacement

[cheakster]

Hey guys, I'm replacing my front CV axles and need a tip. The LF went fine, but the RF won't go all the way into the differential. There is only a very small area to smack" it into place and the extra long inner shaft is difficult to align. I noticed the retainer ring seems to stick out around the shaft a little more than the one I removed, but I expect that is normal for a new clip compared to the old one that has been compressed. Searches have revealed everything about boot replacement but not whole axles. If anyone has a tip or advice I would LOVE to hear it!
Thanks

These are Cardone reman axles from NAPA- American made- good reputation