Actually, the only thing wrong with Folgore was that it was under-armed. It basically had the equivalent of 2 .50 cal/12.7mm MGs, except they were underpowered compared to other weapons of the same caliber. However, those 2 MGs were centerline, so the pilots didn't have to worry about gun convergence. Later models added a .303 cal/7.7mm MG in each wing, which added weight, but only marginally better firepower (they were obviously less powerful than the centerline 12.7mms, and had to deal with convergence, but more guns is more guns...). Most pilots actually preferred to leave the 7.7 mm MGs out, to save on weight.