No, it actually prints like it previews. Interestingly, if i open gcode made separately by slic3r later in repetier it also shows the same sections missing even though they printed ok. Seems to be removing lines of code. Maybe having trouble reading certain spots? I thought it was random, but it is always the same spots if you slice the same model and there does seem to be a pattern to it. Also, identical layers are missing the same sections.