Nav Mesh Issue On Side Scroller

Having a problem with setting up a nav mesh on a 2d side scroller. I am using the starter template and really haven’t changed any settings. The problem is the mesh with show on the floor but not on any of the blocks set up for the level. The forums I have found about this say to check to make sure that the blocks have a collision set up properly. I have checked and they do. I have noticed that if I lower the blocks till they are just above the floor that the mesh will pick them up as surfaces that can be navigated. I’m thinking that I need to adjust a setting somewhere that determines the height the nav floor can be projected… Maybe that’s wrong but its the only thing I can think of. Most videos show this working as a plug-in-play feature so what am I doing wrong? I’ve tried to include a pic so hopefully that displays. Thanks for any help!