Hi. We moved in a few months ago and our yard is a hideous mess. Dead patches and very lumpy. It looks like the previous owners put sod down but did not level out the soil - they just laid the sod onto the lumpy soil. Where do we start in fixing this? We are ok to put new sod down, if that's the best fix, but not sure what we need to do to prep the yard. Rototill it? Roll it? No clue where to start. Thanks.