original agitator "gears" were worn making the rotation / agitation work poorly

When the parts arrived it was relatively easy to remove the entire agitator system with one socket through the top of the molded plastic. The new parts were exact fit (even exact color) so repair was fairly easy.
Once the bolt is removed allowing removal of the entire agitator, the remaining parts come apart without tools. The only problem is if the new part comes apart. The "gears" can be put in backwards not allowing for the proper agitation.