Anyone had this problem? I can hear the motor trying to push them out. They will move a half inch or so then stop, then start, then no movement at all...like there's a gear that's stripped in there that won't engage to push them out. Does this sound like the case to you? Anyone taken one apart to see what is in there? If it's a fairly easy fix I'll try it, but if it's a pain I'll leave it to the professionals. Thoughts?