Stock the Summit came with four .046 idle feed restrictors on primaries and secondaries. I don't know that this model carb has screw in idle feeds. But I think I am confusing myself here. Question - A bleed is what allows air into the idle circuit and a restrictor allows fuel into it, correct? Then maybe I've got my terms messed up. I went smaller on the bleed, from .046 to .043 and it went from rich to rich, lol. I thought that smaller on the bleed meant leaner, but as I'm sitting here googling stuff, bigger hole (more air) on the bleed will lean it out. I went backwards. The reason I was calling it a restrictor was because the Summit spec sheet states "Idle Feed Restriction" as .046. I'm thinking terms are messed up, so I took pics. So maybe I'll throw in a .049 and see if that leans it out.