There were at least 7 or 8 of these above the diaphragms. Diaphragms were fine though, carbs worked great after a bit of clean up. Some sort of wasp larvae rolled up in leaves. Don't know how they managed to get them in there, through the port, but it isn't that big.. I often find small holes plugged by mud daubers. Had one "nearly hatched" larvae pretty mad at me about digging him out with a drill bit..