How do I make my Milodon Gear Drive NOISY?

How do I make my Milodon Gear Drive NOISY?

13000 PART NUMBER.
I thought it was going to be a noisy gear drive.
Does anyone know how to turn this SILENT GEAR DRIVE into a NOISY GEAR DRIVE?
Can get thru to Milodon, being the weekend.
Wondering if they have parts I can buy to convert it...or maybe there is another way.

Any help appreciated. :thumbsup:

GEAR DRIVE.JPG