Just got back from the U.P. (one last trip). Sled overheated on the railroad grade, thought it was from low snow conditions. Went off trail to cool it down. Did not help, shut sled down to check for leaks. Everything looked good. Started sled and noticed coolant was not circulating in coolant tank like it always does. Has anyone had a waterpump go bad? What part failed and was it a pain to fix? Can't get my sled to my shop to rip it apart yet, my yard is a swamp now. Its a 98 SRX 700, 12600 trouble free miles till now. Thanks