Hi everyone, new to this. I got a Monoprice Maker i3 for Christmas, and have so far completed only the butterfly, a Batman keychain, and a split ring for the keychain. I haven't had any problems yet, but I have a couple of questions if anyone's willing to help...1. How often do I need to re-level the bed? 2. What is the best way to add new filament when one ends? What happens if it runs out when I'm not in the room? 3. Should I remove filament entirely between prints? If yes, do I need to clean extruder each time as well? 4. How often should I anticipate replacing parts, and which parts should I have pre-ordered? 5. Does this model and the slicing file for projects with multiple colors work ok together? Will it stop to allow a filament change as part of the file, for example? Thank you for sharing your experience and knowledge!