Polaris Sportsman 400/500/600/700 1

my grandpa has a 2004 polaris sportsman 400 and it is a HUGE PIECE OF SHIT!!! When it was less than 1 year old the ball joint snapped off along with the rest of the wheel! this has happened 2 more times since then! It also overheats like crazy, when i run it for more than 30 minutes the fan comes on and never shuts off, also the 4 wheel drive hasn't worked since 2006. oh yah one more thing, the right rear cv shaft broke so now it is a one wheel drive. I have a '92 bayou 220 and the only thing bad on it are the rear brakes and a bad electric starter. but all i have to do is use the pull cord to get around that.