i was riding my ' 99 prairie 300 2x4 one day, and all of a sudden, the steering started getting worse and worse, when i let off the gas, it turned sharply to the left, but when i gave it throttle, it wanted to go right. i took it to the dealer, they said a bearing was put on backwards, does anybody know what could be wrong with it? or is the dealership right?

 

if anybody is reading this please respond, i need help on what to do. if i do get the bearing, my dealership tells me they will have to put a whole new axle on, but taht isnt right, or is it? please respond asap w/ an answer. thank you greatly