Has anyone the got the same problem as us with exhaust fumes inside the caravan after towing, which causes not only an awful smell when entering the caravan but black deposits on every surface. We also find the back of the caravan is covered with black sooty deposits after towing. We tow with a Mitsubishi Pajero that we have fitted with an exhaust deflector (downwards) but this has not solved the problem. Our previous outfit was an Eldiss/Shogun and we did not have this problem until we changed to Coachman/Pajero. Help