I have a Da Vinci 1.0 printer that recently has been warping parts very badly. When watching prints I note that the print head has been dragging on or actually impacting the parts. I have been in constant contact with customer support: tightened belts, lubed bearings, double checked stls etc. I've heard that this can be a normal issue with printers but am starting to get annoyed with the wasted filament. Has anyone else had and resolved this issue with their printer?