Issue changing rear diff seals, any ideas?

So it was leaking and I took it back to them and they didn't fix it so I got frustrated and just decided to change both of them myself. I read Junkman's and Cajundude's how to's and decided to try CJ's method. I did drop the catback to make alittle more room for tapping the seals. So I got the seals in and the pass side back together without any issue. On the driver's side I can't get the CV joint to mate with the new seal. At least I think it's the CV joint/boot, the black housing around the shaft, I've got about a quarter inch gap between it and the diff seal. It won't go in any farther. Anybody got any ideas???
Tomorrow I'm thinking about pulling the shaft as per Junkman's how to and seeing if I can figure it out.
98 C5 A4 Thanks in advance!

So it was leaking and I took it back to them and they didn't fix it so I got frustrated and just decided to change both of them myself. I read Junkman's and Cajundude's how to's and decided to try CJ's method. I did drop the catback to make alittle more room for tapping the seals. So I got the seals in and the pass side back together without any issue. On the driver's side I can't get the CV joint to mate with the new seal. At least I think it's the CV joint/boot, the black housing around the shaft, I've got about a quarter inch gap between it and the diff seal. It won't go in any farther. Anybody got any ideas???
Tomorrow I'm thinking about pulling the shaft as per Junkman's how to and seeing if I can figure it out.
98 C5 A4 Thanks in advance!
I mean, swapping a half shaft and not replacing the seal doesn't make any sense... 
Do you remember what kind of gap was there before you took the axle out? I'm guessing that it was probably like that before and you just didn't realized it in the excitement of the moment. If that was the case, you are probably fine.
I went through a similar situation when I replaced my seals, although I followed Junkman's method. Check what I posted here and take a look at the pictures. Is that how yours looks?









