I am looking at trading my Yamaha for a BF or a prarie. I rode with both Sunday and one of the things I didn't like about the kawie's is the fact that they don't go in to 4wd as soon as you hit the button. is there anything that can be done to make them instant 4x4 as soon as you hit the button like it is in my Kodiak? These machines are un-real in the power department but if it won't go into 4x4 unless your moving the power don't mean anything! I thought that there was something wrong with one of them but both did it. Also one of the BF had a over heating problem due to mud getting packed it the radiator because its wide open.....has anyone had a problem with this and is there a after market grill or something to fix this problem? I would think that sticks would also be proned to go through the radiator as well. Other then these two problems I would love to put one of these in my garage!