I have been using a Mac to drive my printer since building and only just tried it using a PC this evening.....and....the printing of circles has become incredibly worse!!
On the mac the circles are not great and get junked as the part builds but on the PC they are blatant ovals like in HLA diagram!
I've not touched the printer at all only swapped the computer driving it!...
Can anyone go figure on this one? i'm scratching my head
