Warning: The Loctite 410 can be messy, we recommend covering your workspace with something disposable to protect it.

Apply a thin layer of the Loctite 410 to the inside of the nut well.

Gently slide an M3 Lock Nut into the nut well, ensuring that the locking side (the white ring) faces upward.

Repeat for the remaining two Idler Subassemblies, for a total of three.