I had to replace all 15 windows in one that 'passed' disclosure/inspection & it was the best investment we made.I found that the Pella windows were never installed/sealed correctly & the frames had rotted out along with the surrounding wall sheathing & in a couple of cases the flooring beneath the windows.

The great thing about a mobile as opposed to a stick built, is that if the home has settled or is no longer level, get under there and shim it up.

The dip in the line is under the living area, beneath the slab.

Tip: To send a colleague request or follow an individual, simply click “Connect” beneath their name on either their profile or simply on any forum post and chose “Follow” or “Send Colleague Request.”

When I typed your initial and last name, I was given some threads where you posted, and from there the point Joshua Dorkin mentioned comes into play; beneath the user's avatar icon there is a link showing a number and the word "posts" - if you click that you see all the threads where that user participated.

Just click that or the plus sign beneath it and you'll have done your duty to help out!

If you are gonna flip it, you might not be concerned with the "lifetime warranty" of the repair, if offered, but if you are going to hold it for more than one season (wet season to dry season or vs/vs) you will want that lifetime warranty so you can call them back to shim up the foundation because it WILL move again.....and again and again -you get the point.

My framers almost always fix foundations from beneath

It did a whole bunch of drywall damage to the floor beneath.

And nobody can know the extent and complete nature of what lies beneath without digging it up - especially if it is fill material.