My friend did the same thing this past weekend also... I would highly recomend changing your oil a few more times... best to use cheap no-name oil the first 3 or so times, run it for a few min each time to get the oil nice and hot, after about 3 times and no milkyness you put your prefered oil in. thats what my buddy and i did and runs like new... might want to look at the fuel bowl on the carb and make sure no water is in that too.