A month ago I purchased a 2008 4runner sport with 15k miles on it. It currently has 18k on it. The front end feels loose and the dealer says there is nothing wrong. It is very noticeable when I'm driving on rough roads, it wanders and the steering wheel "jumps" around. It feels like I'm driving my 2005 dodge ram 2500 diesel with 100k miles on it. Any thoughts? Thanks.!