Folklore:
https://www.bikechatforums.com/viewtopic.php?p=2873315 OR Modern: rtv gasket maker (use at ur own risk, too much
will clogs up oil paths & the engine will gone to heaven) is the quickest way to solve the problem
If u can wait, find something similar to proper kit (Kick model CG still popular in Pakistan/ Iran or as collectible in other country) as below
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If u still can't find it, there's
http://chinariders.net/showthread.php?t=14466 1 of them
https://item.taobao.com/item.htm?id=520146970817 CG125
脚启动全车垫