thanks carpy. yeah, the rattling comes when i come to a stop, so hopefully it's not big issue. i'll take a closer look when i open the variator.
i think i'm gonna avoid the ninja g3...i'd love fast performance (together with the doppler 50) but i'd just feel too bad to cut the frame.
i have this ABUS serious motorcycle chain lock so i think it's the best i can do for now...
also have a 60 jet in the dellorto (downjetted from 68 after i noticed i was fouling b9hs plugs (all i had around for my kitted magnum) but yesterday put in a b7hs with 60 and it seems fine. just bad acceleration).