Pushing on the wall to feel for any mounting studs is tricky but can be done. A couple of other options: 1) Go to your local home building supply store and purchase an affordable "stud finder", read the instructions, practice with it some then find the studs. 2) Do you happen to have an electric shaving razor? If so, they can be used to find a wall stud. Turn the razor on, place the back of the razor against the wall that you want to find the studs and move it slowly horizontally. The razor will have a deeper sound at the area between the studs and the sound will rise as you pass over a stud or sold object. 3) Contact Coachmen via their websites e-mail address (the "contact us" e-mail address), be prepared to give them info as to you units model year, brand and VIN number. I had to do this to install a ladder on the back of my TT. I have a couple of good stud finders but it just didn't pick up the studs as I would have liked. When I asked about the location of any studs back there Coachmen sent me a computer generated drawing of my back wall as they built it. There were two studs turned sideways clearly marked "for the addition of ladder". A little measuring from the outside and I found them easily.