Tonight I made the same size piece in Tinkercad that I did in Fusion 360, it does the same thing, it does not centre even when the box is ticked in the machine settingsin Cura and is shown as central when displayed in Cura. I have made another piece that I created in Fusion 360 / Cura about 4 months ago and it prints perfectly, I am pretty sure is not F360, I have tried 3 different versions of Cura and they are all the same, it starts in the nearside left hand corner and starts to make it at about 50% of the size, the filament is not sticking very well to the bed either(no problem on previously items that I made in g code) and the printer starts jittering now and then, I think its a gcode problem but unable to get to the bottom of it, may try another another gcode creation software, any one know which is an alternative to Cura just to compare?