Is your little grill 11WC or 14WC? or other?
It must be the same as your camper's regulator to start with or all is in vane.
I tried a portable Coleman folding grill, but it uses 14WC so at best all I had was a low flame at the grill. With it I just ran the propane straight into the grill, no need for a regulator since the camper was already hooked up to one. If the grill would have been 11WC then I would be set and done.
I would be surprised if your outdoor grill had another low pressure step-down to take the pressure lower than 11, but is possible.
The control knob is not really a regulator, it is just controlling the flow of gas out to the burners.
