On a very hot Texas day July 16 2020 I took off after refueling and quickly experienced significant power reduction and #1 egt going high, followed by #2.  Had been burning 100LL and had fueled with 100LL.  Rotax 912ULS  serial 5,647,684 in Kappa KP5.

Nothing physical had changed that could be found.  Any ideas on what to look for appreciated   

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