I've been tuning and tweaking my printer and my S3D settings. I'm getting really nice results now but there's one thing that I'm still having trouble solving. I get tiny gaps or blobs where the layer starts/ends. I understand that these are going to relate to retraction, coast and wipe settings. I've tried playing around with these but still haven't been able to eliminate the problem - often it just gets worse.
I've now reverted these settings to the S3D default for PLA, printed a benchy and taken some close up photos (attached). Could anyone give some advice on how to get rid of this issue?