The wavy spots on your roof looks like the glue applied at the factory did not adhere the rubber roof to the plywood substrate properly. It may look bad but I would'nt be as concerned about that as I would the sealant in the photo's. As previously stated, the lap sealant needs to be removed anywhere it has failed to adhere, properly cleaned, and resealed.
Basicly, someone did a quick and sloppy job. The self leveling sealant is fairly easy to work with, you just have to take your time and not over do it. Also, as previously stated the sealant should be up against the vent tube if that's what I'm seeing in the picture.
There are some how to videos on youtube on sealing an rv roof, you might check some of those out. There's some good info there.
