Sewer leak in basement

[OntMont]

Since you are still under warranty, take it to your dealer if you are near them, otherwise call Keystone and see if you can take it another Keystone dealer (does not have to be a Montana dealer). If you really must do it yourself, I would first get it really dry, then try sealing it up with epoxy glue, Plumber's Goop, Eterna bond, or some other hi-tech adhesive.

Whatever you do, we wish you well, it sounds like an annoying problem.