Hi all,we've just had a week away in the van,and found that the blown heating was warm at the outlets near to the heater,but the outlet at the other end of the van stayed cold,and as this is the end where our girls sleep,I was wondering if there is any way of improving it,ie;lagging,re-sleeving,etc. I have checked and all ducting is connected.The van is a Swift Conqueror,any thoughts?stuart1