A833 rebuild, remove tailshaft bushing?

Just drive it towards the rear of the of the trans, the key is there just to prevent the shaft from moving forward.
When you go to reassemble the trans a piece of 1/2 condut cut long enough to hold the two counter shaft thust washers, works excellent to put the counter shaft in.
I just got finished rebuilding one and I took quite a few pictures.

So I just use hammer to tap the countershaft out? How hard is it?

I did use big plastic hammer, tapped very hard but it does not seem to work. Is something wrong with countershaft like it worn out and it stuck in the case, is it possible? (I never rebuild A833 before)

Im thinking of using bigger hammer, but Im afraid I will break the case, any suggestion would very appreciated.