I have been mowing my own lawns for 30 years. I do not think I have ever owned a mower that cuts this bad (21” self propelled). It does not mulch well at all. Many of the clippings are full length. I basically have to mow with a 50% overlap and it still leaves single blades of grass sticking up everywhere. I live in Louisiana. My lawn is st Augustine. I mow every Saturday morning. I am on my fifth mow with this mower and I am probably going to try and return it to Home Depot. I get a slightly better cut by lowering the deck but I should not have to do that because I am cutting the grass lower than I want it. I am hoping it is something as simple as I am doing something wrong. But I really don’t know what it could be at this point.