One thing to keep in mind on these CV axles seals is that this set up is prone to scoring up the seal surface on the inner stub itself. The diff seals are exposed to dirt and grit and that gets in there and ruins the surface the seal has to run on. Just about everyone of these I've taken apart has had a damaged seal surface. both my front axles were replaced under warranty once for leakage and Gm replaced both the seals and axle assemblies. Both axles had severe scoring.
If yours are scored , you can try and polish the surface with some 180 grit emory clothe. Just before Moab , I changed one of my CV axles due to a leaking boot issue and it was scored pretty bad. I polished it and got most of it out and will use it as a trail spare but it may or may not seal properly.
If you elect to replace axles get new ones as remans may have been polished too much to restore the seal surface and may actually be undersize and not be able to let the new seal have enough clamp pressure to seal properly and fail prematurely.