Howdy, I've had my Robo R2 for about 2 weeks now and this is my first experience with printing. I've noticed that the front left screw/spring assembly on my bed (as you are looking at it) frequently comes loose and I sometimes find the screw falls out after a few prints. When I run through the leveling procedure and I press down on this spot it doesn't seem to have enough support because the opposite corner tilts. Has anyone else had this problem? Are there any work arounds?