Looking for engine part for Lifan 163FML-2M

The engine is the 200cc Lifan OHV with balance shaft, 2007 if that maters. 163FML-2M. I need the gear that is attached to the end of the balance shaft. It's a spring loaded gear that has developed some looseness in the springs, and I know from experience that once the springs start breaking down it won't last long. Anyone know where I can get one? I'm in Oregon BTW.
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Thanks humanbeing for helping me with taobao. I ordered one that looks like it'll work.