Heat diffuser and fuel lines?

[airguy]

Looking at the hot air inlet to the cabin on my 9A, there is only a few inches and one thin piece of sheet metal separating that hot air path and the fuel line (in the fuel boost pump area directly under it). Has anyone else been concerned about raised temps there from the hot-air inlet and insulated that floor of the diffuser box? What did you use?

[Dan B]

I insulated all my fuel lines with fire sleeve to help prevent vapor lock. This included insulating around the fuel flow meter and plumbing blast air to the fuel pump. So far, no vapor lock problems, even while operating in 110 degree heat.