How to remove pilot bearing/bushing ?

[PHOENIX]

I am asking about the pilot bearing/bushing for manual transmissions that is located in the center of the flywheel (where the flywheel bolts up). Before I was able to just pull it out. But the one in there now is in there pretty good.
Is there a trick to getting it out?
Do I need a special tool?
I tried to use a clothes hanger, but that didnt work.

Also has anyone replaced the stock bushing with a roller bearing?
Is is worth it and whats the point?

thanks.