just put the 2.0 16v in the corsa, everything's going good, but it's developed a leak.

The inner cv joint on the drivers side is dripping oil, (between shaft and box) my mate says he can see a bit of the shaft that goes into the box - although when I pusshed it in, I tried to pull it out - could it just need tapped in that wee bit more? At worst I imagine it's the seal, but I don't remember it being damaged.

Also, the joint came from a cavalier 1.8l J reg - it didn't have a box in it and am assuming it would have had an F16?? It is a big joint we've got, and it appears to fit - just dripping oil out -

Any clues?