I am building an electric go kart with a surron light bee motor and am using a Powervelocity 24 let controller I seemed to of found the correct configuration for the phase /hall wires but every time I accelerate the motor changes direction .I then tried a second PV controller and it does the same thing, next a Sabvoton 72150 and it works perfectly .I want to use the PV because it produces a lot more power than Sab.