Thanks. We found the label on the bed and it says 1100 pounds.It's not 150lbs. That's less than one full sized adult. It's usually about 1000lbs based on manufacturer. I couldn't find anything in the owners manual and brochure for your trailer. The next step is to contact them, which you apparently already did. So you have a real stumper there.
https://www.dutchmen.com/resources/media/user/ownermanual/1539843836_brcfile_2015 Dutchmen Owners Manual.PDF