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Rotax 912 uls with 830 hours.  Compression 80/63 80/68 80/68 80/69 on hot and cold engine.  Last year #1 80/64 and all others in 70s.  No oil burn or any issues at all.  Manual says 25% acceptable or 80/60. Most people show compression in high 70s.  Should I be concerned?  Still learning rotax engines.

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