Woodhound, I have noticed similar automatic transmission problems.
Problem 1 - When braking to a stop sometimes the transmission holds onto the engine to the point of stalling the engine. When you brake to stop, the machine attempts to continue to push you along while you must force the brake, against the transmission's opposite forward effort, thus stalling the engine and stopping the machine. Pumping the brake when this happens will stop the effect, but this still isn't how it should operate.
Problem 2 - When climbing hills and then cresting to a flat area the machine launches as if the torque convertor was excessively slipping while climbing and then, at level ground, the transmission then grabs aggressively and gains excessive speed. Downshifting or a torque converter lock would likely fix this.
Roxor customer service states, "I am not aware of any issue, if you feel there concern take your unit to an authorized dealer for inspection." I call BS on this response. Anyone who test drove these machines should realize there is a problem. I am not about to haul my machine far away to a dealer that will leave it setting for weeks and still not have a solution to fix the problems. They would only say something like, "we couldn't replicate the symptoms", or "it's nothing to be concerned about".
The real fix has to be in the TCM (transmission control module). It seems that the TCM must be an internal part of the transmission. These transmissions are a GM product GM6L50 and are used in several other brands too. Some have TQ locks which I feel would be nice to add to the Roxor.
If anyone knows a good transmission guy that has the ability to make changes to the TCM or add a TQ lock, I am very interested.