How do I prevent SUDA from changing the length and widths of my manhole and drop inlet structures every time I click compute?

When setting the bottom elevation of a structure, for example a Grate Inlet with a depth of 2', SUDA will automatically drop the elevation do the depth is 2.78'. Is there a way to disable to this automatic feature or bypass this option to set the correct…

Hi Im currently working trough the Subsurface Utility Design and Analysis Learning path , Im getting stuck at Lay Out and Compute a Simple Site where they start with the Defining Catchments from shapes and network calculations. Im missing some options…