I bought a new PowerSpec 3D Pro 2 printer at Micro Center store today. I got it working with Simplify3D software. I'm printing the wire saver shown at http://www.thingiverse.com/thing:1549265 I'm confused about the filament guide tube holder. Which one should I use? I want to buy Micro Swiss all-metal hotend kit but does the printer has MK10 hotend? The printer has lift-up door and 5-piece top cover.