Tool to disconnect ball joints?

[s1ngletracker]

I have a tool that is sortof the right design, but its a bit too 'thick' to fit in between the axle and ball joint, if that makes sense.

Does anyone have the right tool? Perhaps the actual mitsubishi one? Or some other trick on how to free these things? The last time I had to do this, I actually took the LCA and knuckle off the car, and cut the joint, and then pounded it out. Then I obviously had to replace it. That was a pain, I really don't want to have to do that again.

This is on a different car, another couple ball joints that probably haven't been disconnected in a long time, if ever.

Any help is appreciated!