Anyone know the load rating of the factory roof rack bars on the T&C Vans? I need to move a ladder, about 175# , later tonight. I only have to move it maybe 10 miles but it's my wife's van, I don't want to snap the load bars. I have the manual and Haynes at home but I need to know before I leave work in case I have to bring a company truck home. But those I have to pay the gas on, which I'd rather avoid if I can. Thanks in advance.