Delays are VERY dependent on proper ignition, and Black Jack motors can be very finicky about ignition.

Did someone different put together the motors on the first day vs the second?

As was said, an F22 lifting two eggs is not the best idea unless you get perfect ignition. The flights you describe sound like usual poor Black Jack ignitions to me (i.e. slow, weathercocking even in light wind, bonus delays).

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Roy
nar12605