big trouble!

[chinariderinthesky]

okay, i was riding down one of the main streets and i rounded a corner in first. i let out the clutch and the bike felt like it stalled out. i started the bike right up and it runs with a horrible "clacking" noise coming from the case. the bike started up good and it drove to the next driveway good but i am now elbow deep in it and i have to have it running again by wednsday. i already got the magneto side off and everything looks okay. and ideas?