In an effort to unclog my R1+, I went to the official documentation on the Robo web site. Unfortunately the "Quick Release Screw" was tightened so tight that I ended up stripping the damn screw. How the heck do I fix this? My patience with these printers is starting to wear very thin. I'm now back down to one printer. I've got jobs to do this weekend. Why the heck is removing the hot end from the R1+ such a challenge?