Holley Carb Gures, Secondary adjustment!!

I have a question about a Holley 750 DP. The secondary's have a small adj screw that sets the at rest open amount. The carb I have on the bench, the secondary's are set what seems to be open quite a bit. If I shine a flashlight down the carb there's a good sized light ring around the butterflies. Should they be closed almost to the point of touching? The carb has no air mixture screws on the secondary's. Thanks!