This is my first post here and I hope someone can help me out. I have a ipf6300 and it makes a squealing noise when printing on some (not all) sheet papers. Talked to Canon about the issue but the rep seemed disinterested and said it wasn't a mechanical failure because it doesn't do it with all types of paper. He also told me that only Canon papers (I don't use any) were approved for the machine. Which seems like complete BS to me. What do you guys think and has anyone else had this "squealing" problem with a 6300? Is this just a normal thing with some papers on this machine? I also have a 9500 mkii and the same papers that squeal in the 6300 are fine in it. Could I be using the wrong base paper in the media configuration guide? Any help would be greatly appreciated.