BeaVicross, what you are describing is normal opperation for the TOD. At a complete stop, and below (I believe) 5mph only the lights on the rear wheels should be lit, none on the front. When you get above 5mph the first bar on the front wheels should light up and stay lit. If the wheels start to slip, then the TOD will temporarily throw power forward and all three of the bars on the front wheels should light up.
One thing I didn't realize about the TOD is that when it pushes power to the front wheels it is just a quick blip (until the wheels stop spinning) and not constant, sustained power, so it feels like a surge.
Hope that helps.
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