I recently upgraded my printer from a Mk8 with dying motor to a (non-Bowden) Titan with E3Dv6 using an 11Ncm 0.9-degree motor (calibrated e-steps are a whopping 1674!). (The old motor was a lot bigger and 1.8deg.) Although I'm still tweaking settings, I'm pretty much to the point where there's only one issue remaining: bizarre "dimples" at the end of each layer: (This is PET running at about 45mm/s and 243C, if that matters; note that I have not tried any other filaments yet since installing the Titan, but this never occurred with this or any other filaments prior to the upgrade.) The smaller motor seems to have enough power - I have yet to have any "clicking" or other indications of extrusion issues beyond this due to lack of torque. I've messed with all the LCD-changeable firmware settings I can think of (acceleration and jerk primarily; I admit that I'm not too knowledgeable in the firmware area), I'm using S3D and have tried every combination of settings imaginable, and no matter how awesome I get the overall print, I cannot get rid of these tiny little indents. Bolts have also been loosened enough that I seriously doubt they are the issue. I'm 99% sure the dimples are at the end of the nozzle movement, not the beginning (settings-changes affecting the start of the line pretty much universally make the whole print worse), and since S3D won't let you set coasting distances to negative values I can't kludge a fix that way (enabling coasting but at 0.0mm doesn't help; I even gave that a try). Everyone I know is stumped at this point, so now I'm moving on to those that I don't know. I've spent at least 10 hours this point, probably double that, and am completely out of ideas. Hopefully someone here can help me solve this! Cheers!