Ok, so here's the basic question: I have a UM1, and I want a new, better printer, but I am worried the UM2 will have the same problems my UM1 had.
I got my UM original about a year and a half ago. It worked very well at first, but there were plenty of issues. Z-screw leveling issues, bowden tube-popping issues, belt tension issues, extruder issues, and primarily under-extrusion / nozzle clogging issues. Oh GOD, the nozzle issues. The improved somewhat when I finally printed a filament cleaner, but after X hours of printing (which good, expensive filament), they would inevitably come back. I