Adjusting the valves will not affect the crankcase venting system.
Since the crankcase venting system is only connected to the crankcase and the air box, any fluid collecting in the drain tube
must come from the crankcase.
Was your fuel mileage affected? Do you suspect you might be having problems with the fuel injector?
__________________
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