I understand the darker shade of grey indicated on the build plate for 'printable area', but the lighter shade of grey's purpose is alluding me! In regards to the attached print, 'print bed adhesion' is turned off, so there shouldn't be any account for that, this is a single extruder set-up, and 'print all at once' is the default. So seeing my print design is well within the confines of printable area, why is the lighter shade of grey indicating I'm out of range?!