So recently my Creality Cr-10 is doing something wierd. It prints very well etc, and I've been using Cura for some time, and getting S3D sometime next month. Back to the point, the past 2 days, everytime just before a print, the filament extruder just suddenly retracts the filament backward alot (approx 10 cm), thus causing the filament to come in about nearly 20 secs late, which of course causes the print to pretty much fail right at the beginning. I went into Cura and checked the machine settings, and it's still just the G28 ; Home for the start Code. I'm not that great at programming so I'm confused. Thank you very much.