driveshaft bearing????????

[spectraman101]

Hi guys. I was wondering if you could help me with a problem i discovered on my 02 600. I recently got the bike so here's where i am with it so far. I went to view it before the cash was handed over, i noticed a lot of play in the chain and the sprockets looked a bit worn. I normally like to change the chain and sprocket set up when ever i get another bike so i thought, no problem, i can order the new stuff when i get home.So cash was exchanged and off i went. The chain was making a bit of noise on the way home so i thought nothing of it at the time. I got the new stuff after waiting a week for the delivery. All went well with the installation etc so i took her out for a test run. THE DAM NOISE WAS STILL THERE AARRRGHHH!!!!  So I jacked her back up again, put it in gear so i could have a listen. But i notice the chain was hopping around between the sprockets. So stripped it back down, even to the point of removing the front sprocket. I started her back up and that was when i noticed the noise was coming from the gearbox. Its almost sounds as if the gearbox has a drag spot and its not flowing freely... Any suggestions guys? output/drive shaft bearing?