Thanks, Rocmoc. I have a call into Arctic Cat and expect to hear from a customer rep within a few days. In the meantime the Prowler waits for my decision at the dealership. I have concluded that my plowing needs are beyond its design parameters and will be putting it up for sale once I have figured out the best way to sort out the engine issues. (New engine, rebuild, or ...)
It is a fun machine, to be sure, and performs brilliantly in the bush. But no way I can push lots and lots of snow and still keep the rads clear. Hope it can find a good home with someone whose needs are more modest.