[kjewer1]

It is very well worth it, but I'm not sure I have the motivation to attempt it with the motor in the car. But it can be done.

More specifics on the shafts' function, they create vibration that cancels out the naturally vibration of the motor. So by removing the shafts, no more vibration is made, but more is felt. They do not have anything to do with balancing the rotating assembly, which is a whole different process.