My brother just bought a 2004 T660 touring for a second sled so his wife and kids could do some comfortable ridding. He was told the sled would do between 55 and 65 mph, but he cannot get more then 45 mph out of it. Soon as it hits 45 mph it feels like a governor kicks in and just cuts the power right off. Is there something wrong with this sled? It actually has some decent pull up to 45 then it just falls flat. Any help would be appreciated!