Nit-pick print quality question - just curious

[iras]

Attached is the G-Code for a small PIR sensor case about 50mm square by about 40mm tall. I've printed a few of these and all of them exhibit the same problem.

The Gcode file is much to big to attach (1.8M), so I split off the beginning (the first few layers have holes and are basically solid, so too much Gcode to send) and the ending very top few layers which are essentially the 4 vertical walls about 50mm long and a couple of mm thick. It might be the second file that is most useful. THanks.