Hi All, I've just got my E3D Lite6 & Titan set up & working, & as I can print again, I'm now back to designing stuff. However, I'm having problems with dimensional accuracy. I'm designing & printing some new bearings for my Prusa i3 clone, but when I design a simple 8 mm hole in a 10 mm circle, it prints the hole out at around 7.5 mm. My external diameter came out at 9.99, which was lovely. I have my Extrusion Multiplier set correctly, as I've measured the thickness of the top couple of layers of a double thickness wall & compared that with what it should be - I got 1.10 which seems fairly reasonable. My Titan is extruding exactly 100mm when I tell it to too. So what do I need to do to get it to print an accurate hole? Thanks.