Icing? This time of year?
But then I’m in Florida and it is hot as hell already.
icing in the carb can happen at above-freezing ambient temps. The carb is constantly evaporating fuel in the venturis, and if you descend rapidly from altitude ( 3 degrees per thousand feet) with the right humidity/temp/rate of descent/power setting, you can ice your carb in warm weather. When that happens your get, um ‘poor’ engine performance.
Been there, almost done that. CARB HEAT!!! (Tri-Pacer)