If it's a Pz30 (ie. for a larger displacement) then ALL stock setting are
wrong... Try tricks to make it right again ...
Mixture screw <pilot jet> / Different position <Needle clip>/
<main jet> If Sheng Wey is same shape & ~9?, swap it in... If not put hair size copper wire(s) from some spare electrical cable. Need some calculation... Don't know what's available from ur side BUT ⌀0.12mm varitey is quite common here Example:
http://www.ebay.com/itm/262157657988 [Learnt from folks travel to higher altitude] OR
proper smaller jet...