http://www.tru-tension.com/chain-monkey/ (http://www.tru-tension.com/chain-monkey/)
Seems like a good idea. Might take some trial and error to get the right setting.
http://www.ducatimonsterforum.org/index.php?topic=72632.msg1338652#msg1338652 (http://www.ducatimonsterforum.org/index.php?topic=72632.msg1338652#msg1338652)