ok.....so i started tearing down my 1998 yz400 in search of my knocking noise and i got as far as getting the clutch taken out and what not. i did notice that when i had the clutch plates/discs out, i was able to rotate the clutch basket ever so slightly left and right. it was enough to make a 'knocking' noise and i was wondering if a little clearance is normal? im trying to check EVERYTHING while im pulling it apart so i can cover all the bases. thanx guys.