So my sled was running crapy over the weekend. I couldnt just gun it i had to wait till i got over 5krpm before i could and sometimes even after that with full throtle it would bog down. So i went today and emptied the crank. Never done it before and in each part of the crank there was about 3-4 ounces of fluids in it. It took a lot of pulls to get it started but once i did i lifted it and ran it and it was fine. But now ill the fluids fill back up again. If so what do i need to do to fix it? And about how much. And it dont look like i have a good seal on the crankcase cause the front left has some black gunk that smells like oily/gas.