Hi I have had my swift challenger sport 544 for 13 months now. I was cleaning my caravan the other day , on washing the roof I noticed the join of roof and side panel on both sides towards the end of the caravan had really deep cracks/ splits in them. I contacted my local swift dealer and showed them pictures of the splits, and apparently they are stress cracks. Just wondering if there is anyone else out there experiencing the same problems and wether its a big job to repair?