Hi, much appreciated your reply, no, I hadnt even realised I ought to calibrate the machine so I'll try that, as the explanations in the links do sound like that could be at the root of it. Another question, if I may; I've used the OEM slicer software, simply called 'Creality Slicer', would I get a better quality print, with like for like settings, if I used Cura?

Obviously a lot for me to learn!