ive also had the coolers under the foot boards leak. sand and stuf gets inbetween the tunnel and the cooler on the inside edge about half way back, and as the boards flex it wears through the cooler like sandpaper, usually when it does that the leaking coolant runs downhill to the front of the cooler and drips right at the front of the cooler. can get new ones but i have had them welded up before and thew held up fine. it is reccomended to have a rear cooler if you run in alot of marginal snow, with vipers, that will take care of the overheating. i have not tested this idea but i notice that the coolers are actually a little thinner on vipers than in the ol srxs and other sleds out there, my thought is that may also help to swap them out for the thicker ones. i also think that stiffening up the running boards to minimize the flexing during aggressive riding will help prolong the coolers before this happens. good luck, cant wait for snow again.
