Hybrid Trailers FYI
Just a couple notes so you don't have to go thru looking for the cause of the problem.
leaking bed ends, replace rubber seals, after being closed for long periods leave open for a day or two so seals can fully re-expand. Look at bed end door latches, these are adhered to trailer with screws, they will pull out causing leaking, I drilled thru and used carriage bolts. On a new or bed end that is not leaking seal with silicone the edge of the frame on the inside, if water gets in it will go thru to the hinge drain and not cause de-lamination damage. Forest River is awesome at getting you the proper replacement parts at very reasonable prices and helping answer any questions you may have.