http://cgi.stanford.edu/~sanjayd/gs500/Maintenance/5CarbSync
has one link, to a forum entry with no details any more.
and other links, to pictures that dont exist any more :(
can we get it updated to something useful please?
Found the balancer picture you want on my computer,
(http://i815.photobucket.com/albums/zz72/mitchc_1/Bike/carbbalancer.png)
Hey thanks!
I uploaded it as an "attachment" to the wiki. but dont have edit perms, so couldnt update it further :(
Another option, and this one is used all over the world on other air cooled two cylinder engines with great success:
http://www.powerchutes.com/manometer.asp