Dometic fridge not cooling on gas

This morning I cleaned the interior of the flue and the flue baffle. The inside surface of the flue is not rusty and appears to have some sort of galvanized type finish so it is clean. I opened the bottom portion of the insulation shroud to see how the electric element contacts the solution tube for heat transfer. I found that it is in a small tube of its' own and actually touching the solution tube while the gas flue has about a 3/8 inch air gap between itself and the solution tube all the way to the top. It seems there would be a considerable reduction in heat transfer with this situation. Just wondering if that air gap is appropriate or if I have one that got welded on too far off center. Should the flue be touching the tube with the solution or have the air gap?

I also removed the baffle I had installed previously so I again have 3 1/2 inch air gap between the camper wall and the cooling fins.