I bought this for my daughter for Christmas and the first time she used Bobsweep it got stuck under the bed and was scratched by a piece of the bed frame.  It still works but can the cover be replaced? And how much would it be....I saw a video and it is complicated but don't know anything about how to get the part.  At this point she is on a trial run but if she decides that it gets stuck in places too often she may want to return it.  What does that mean for the scratched cover???  Is this possibly under warranty?  It's frustrating as she only got to use it once.  As far as cleaning goes, she is happy with what it has picked up but Bob is still trying to figure out the layout to her apartment.  It also has a problem getting over a transition piece from kitchen to bathroom...and it is not that high.