just bought my f7 the other day, test drove it that day and all was good. i pulled sled off trailer, drove it around back yard and noticed what looks like antifreeze sitting under sled. so i popped hood open filled antifreeze container, capped it and started it. almost immediately the antifreeze comes running out of the overflow hose....i think i got gasket issues but not sure. sled supposedly has about 1,000 miles on rebuild. what is causing this and how do i fix and how much is it gonna cost me?? we got snow on the way and wanna have the f7 ready....thanks guys!!