I'd say that isn't common. Do you or did you travel with your gray water tank full? We sometimes travel with a full fresh water tank, but have added an extra 2 supports or cross members to accommodate that maneuver. Buy always empty gray and black right after hitching on to the trailer too move anywhere..BUT we do keep about 5 gallons of geo treated water in the black keeping it ready for next use and eliminate odour.
2012 ST25RB SunSet Trail - RESERVE
Silverado LT Z71