I'm sorry Ty you lost me then with LM.What I think has happened (now this is going to sound like I'm a dumb arse,but I haven't had much to do with these.Correct me if I'm wrong.Please?).It looks like somebody has got a G4 carby and the original twin and busted the front of the twin carby and glued it onto the G4.As it has some sort of idle speed control at the front.I have only ever pulled one G4 apart before so I'm not sure what things your talking about.If you have any pictures to illustrate them please do.