Hey guys, I've got a problem for the gearbox gods that i was hoping to get a little help with. I'm currently rebuilding a sierra gearbox for a mate but I've run into a little bit of a problem

I cant get this sleeve (flathead screwdriver is on it) off to pull apart the rest of the gear set. i cant just press from the bearing because there will be a little ball which sits in a little recess between the bearing and the sleeve which you can see in this photo i've found

and it would be very difficult to press from the spacer between the bearing and the sleeve because of the chamfered edge and the fact that there is very little room to pry from.
Any suggestions?
Cheers