I am having an issue with under extruding after retracting on my prints. Here is an example of what is happening.
This is a print a couple of months ago with the same file.
No changes were made to the machine between prints.
I have changed nozzles as I was suspecting a blockage if anything.
I have also updated the software from 2.4 to 2.7 with no change.
Printing with .4 nozzle at 220C with .02mm layers at 30mm/sec.