The oven in our van takes ages to heat and never gets that hot. I have wondered about fitting larger jets. As I will have to remove the oven from the van to get at the jet I thought I could experiment out in the garden. Perhaps get a couple of jet sizes so hopefully sort it. Is this a mad idea? The oven is a SMEV with an external flue through the roof. We have refillable bottle using Autogas at 30mb.