Rumble shouldn't rattle...

Had a visit from Mike, who works for a kids club here in town. He bought a controller from me, and I got talking with him and he's brought me some he's had issues with. 

This one would cause a lot of noise when the vibration motors we're doing their job. 

Ah. Well. That would do it. It's rattling against it's enclosure. (Note the break). Nothing some UV resin won't fix. 

After reseating everything (remember the battery terminals). Boom. Brand new. I wish Sony and Nintendo made controllers this nice.