Topeak MTX Trunk "Rattle" Bag

My resolution to the annoying Topeak MTX QuickTrack Trunkbag "rattle".
This isn't a simple fix and it would rank a little high for difficulty. It's also not a crazy expensive fix either, it just requires a little skill.
Tools:
Tap Handle: ($6)
www.amazon.com...
6-32 NC drill/tap set: ($4)
www.amazon.com...
6-32 set screw: ($4 / 25pk)
www.amazon.com...