You're welcome. I'm glad we can help.
Do you have the cushioned rear hub, or the original rear hub? Regarding rear sprockets, you might enjoy reading the following thread.
http://www.chinariders.net/showthread.php?t=15125
I also highly recommend the 13T, counter shaft (C/S) sprocket, which is readily available for sale on Taobao.
__________________
Spud
"Never argue with an idiot. He will drag you down to his level, and beat you with experience."
Mark Twain
2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220
Mods made to my Zongshen ZS200GY-2:
http://www.chinariders.net/showthread.php?t=6894