I am trying to figure out whether my mgr5755 is a select model. In the manual it says that one of the rear burners is the simmer burner but it indicates that it could be either burner. There is also an asterix that apparently hints that there is a select model which differs from a standard model. I have know idea how to tell if I have a select model or which rear burner is the simmer burner. Any help would be greatly appreciated.