Board Thread:General Nerf discussion/@comment-27306930-20190116020304/@comment-27306930-20190117020857

I forgot to mention that sometimes build up of dart dust and foam residue (aka dart burn) can affect the balance of some flywheels. You might want to clean off your flywheels inside and out, and let a new layer of foam build up.

Also, some flywheel cages use a rubber retaining strap to keep the motor pressed in the housing. Remove the strap and see if the motor wiggles around in the housing. If it's loose, you can jam small bits of paper in between the housing to seat the motor more snugly. Then put the retaining strap back on.