Hi, I have a rotax 914 installed in my plane. My RPM was pre-adjusted to be at 5,500 for max continuous power. However, when I throttle to max continuous power, my RPM picked up and stayed at about 5,450 for 3 seconds before dropping down to about 5,000 for 20 seconds and self-recovered back to 5,500 thereafter.  Any thoughts?

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