I just bought a 97 polaris sport 400L ran real choppy at first cleaned the carb changed the air filter and it started running a lot better except every once a while the thing would cut out for a second then come right back. got up the next day it started went to put it in reverse and it died before I got it out of natural and now I can't get it to start back up even with starting fluid. I went through the carb again checked spark. Plug is wet