Hey guys, love the site. I have a problem I hope you can help me with. My dad just got a 98 sportsman 500 with the AWD. This is the first ATV I have had my hands on in about 15 years, never worked on a 4wd model. My dad is 70 years old and is not up to working on this so it has become my project. When we switch the awd on the light does not come on. There is ALWAYS a loud clanking noise that is coming from where the front drive shaft exits the transmission. The front driveshaft does not rotate like it should, or was told it should. If I grab onto the front drive shaft I can really feel the clanking noise and if I put pressure on the driveshaft in the counterclockwise direction it will start to spin. This is with the atv off the ground. Im pretty sure something is broken inside the transmission but not sure if it is worth putting $$$ into. The thing start and runs great, but Im not sure this is worth the effort. Thank for any help in advance.