Dear Aigenga, Your listening is the final arbiter of whether any change is a good one, but I would only observe that by using a "spongy" washer where once was a solid washer, you have to some degree decoupled the motor from the rest of the chassis elements. This obviously can be a good thing. But it can also be a bad thing, because now the motor/bearing/platter as a unit are more free to move when the motor is called upon to increase torque in response to drag on the platter. Remember Newton's Laws of Motion: every action has an equal and opposite reaction. When the motor urges the platter in the clockwise direction, the motor itself has a tendency to move counter-clockwise. Plus, the Victor engineers had the option to anchor the motor assembly in any feasible way, and they chose what they chose. Just a thought.
Irrelevant if you are pleased with your modification.
Irrelevant if you are pleased with your modification.