Gear Diff O Rings

[Maximus3d2000]

HI

Silly questions but having some issues with putting my gear diff back together. Do the two o rings, sit around the gear housing or do they sit on top of it? If the sit on top of it, i have a real issue trying to get the thing together but the manual says thats the way it goes together? Ive put them around it and it fits straight on.

I ask as i found a pool of gunk underneath the gear housing and not a massive amount of oil in the gear diff.

Any help would be ace.

Here are some photos to try and explain what i mean.

Around the housing




Ontop of it