nice mods... looks like a playmobil for batman..
You mentioned you got this bike out of box and next mod will be a change of sprocket from from 12 to 13 teeth.
I look in my manual and there is stated the final reduction 34/13.
So...are you shure you have a 12 teeth sprocket installed now??
Pictures of my Raptor here:
http://chinariders.net/showthread.ph...=Raptor&page=2
And I´m also very satisfied with this bike.