Seems like they blew their training budget on the machine! The dynamics to correct are pretty simple. An imbalance can be modeled as a net mass located between the inner and outer rim of the wheel and at a certain radial distance from the center, and at a certain rotation from an arbitrary reference radius. This will require the weights to be split between inner and outer rim in some ratio  but not zero. I.e. the imbalance will never happen to find itself on the outer circumference of the tire.
Steve
