When we bought our 28BRS North Trail, the salesman said the rear bicycle pull out rack was good for about 200 lbs max. I can't find anything online about how much weight can safely be put on this rack. The spouse has a motorcycle that's at least 350 to 400 lbs he wants to haul on it. I feel this is too much weight to the rear and the slideout rack doesn't look strong enough for that kind of load. Please.... anyone.... what would be a safe weight on that rear pullout rack?