Compression lost

Hi guys. I have 80cc Chinagirl. Compression test show 130psi after i turn motor for few times with open throttle. Then compression starts dropping steadely. How do i know if it is the rings or something else. Help please.
 
Welcome to the forum, it depends on how many miles are on the engine. If its new the rings haven't seated yet. If you haven't noticed a power loss its probably OK.
 
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