Here is a pic than can help you to make the mod . These pic is the mod in a Ricochet Hopper and its faster now and no balls jammed. These same Impellers i used with my Revolution and work great faster than regular Rvo but not that fast, like the Ricoshet the better hopper out there .
For more questions please firstname.lastname@example.org
I am selling brand new Revolutions with the mod and brand new Ricochet with mod .