[tgross35]

There is no "official" way to bring the motors to a dead stop. One solution (and the only one I can see besides a hard stop of some sort) is to reverse drive the motors for a few ms before stopping but even that may not always work, depending on how much momentum is keeping the motor spinning. However, do this at your own risk: it can snap chains, rip teeth off sprockets, wear out your motor and transmission and even, in our case, snap a 1/4" aluminum plate (though to be honest, it was poorly designed strength-wise.) Hope you find a solution.