Does the the "soft spot" Start right at the top of the step, up against the metal trim around the stair well? In our 2015 27K a squeak developed in that area and I added some aluminum angle screwed into the bottom of the floor and the back of the top step. I used many short screws and bedded it in construction adhesive and the squeak was gone. Our floor does not have any soft spots. I would probably get under the MH and put my hand on the bottom of the floor and have someone walk on the floor to see if you can feel it flex. I think the floor material is at least 1" thick. Good luck
__________________
|