3DBenchy is a great troubleshooting 3D print torture test. One thing I had difficulty printing was a clean chimney stack. Unfortunately I had to wait until the very end of the print to verify whether or not slicer changes were improving or not. I decided to cut the roof and chimney in order to quickly troubleshoot the problem area.
Special thanks to 3DBenchy for your excellent torture test object.
Original complete 3DBenchy: