Hi Julieann,
The fridge might need a new jet also, I have read that if the van is not parked pretty level the flame damages the sides of the fitting.
The van is supposed to be no more than a few degrees from level otherwise it cannot function properly, check this out first and then get an engineer to check the jet.
I assume that sufficient air and ventilation is available for the fridge? No blocked vents?
Davy