hi had help before on here from swift so looking for advice again.my van is going in for repair this saturday thanks to andy on here but i have a worry that my dealer seems to think is normal,when it rains and van sitting level my rear skylight above bed on my firestar the water lies very deep around this area hence when parked in my drive i have to keep front of van on ground to drain roof my dealer says normal for flat roof van.all my other van were flat roofs no probs van is 1 year old.please advise