We just purchased a 2016 Heartland North trail [FONT="] model 28DBSS. We are just learning about it and have some questions. I wanted to know about when the slide out is out..it does a little drop when it is fully extended out...is that normal? Also...since the dinette and the couch is located in the slide out, how much weight can that safely hold? It makes me nervous to have everyone sitting at the dinette and on the couch...We are also confused about the Black Tank...and Grey Tank 1 and Grey Tank 2. We do not see anything marked Black Tank...Any help would be appreciated...Can not wait to take it camping.[/FONT]