Yep, the bushing install is EASY. Getting the shaft screws out without twisting them off isn't that bad, you just have to make sure that all the staked area is removed BEFORE you turn them!
We get a few calls where folks have got into troubles, and in most cases we can get the screws out and repair the shafts if needed.
I would recomend, if you twist off a screw or screws, just leave them alone and contact us to make arrangments to send them here. It's much easier to fix them before attempts are made to drill them out or remove them.....Cliff