I would suggest you verify (sounds dumb) tach rpm with a hand held
tach checker. Verify "full throttle".
Larry Flesner
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What I meant by "full throttle" is go to "full throttle" in the airplane
and verify the throttle plate is at the wide open stop on the carb.
Also, is there anything on the intake that may be restricting airflow
even when the throttle is wide open?
Larry Flesner
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