Why do you have to remove the draw time and animation if you want to add block? I reccomend throwing the whole idea into coding help.
If I wanted to, I would have to use MarbleMan's sword block script thing.
What his script does is when you right click (with the weapon that the script supports) it changes to a completely seperate 'weapon' if you will, with it's own couple of state-names. After you de-click the right mouse, it will send back to the original supported weapon, triggering the activate state again.
I could go to coding help with it, though I'm pretty sure that they would just recommend me to do the same thing for something that I really don't want to add in the first place. (Use MarbleMan's script.)