I can't for the life of me figure out why every time I go to print in tray 3(which is letterhead), the printers attention light starts flashing and it asks why tray 1 isn't loaded with letterhead, even though it is set for plain and it's only the manual feed slot. When I tell it that I want it set for plain, it jumps to tray 3(which ironically is set for plain) and just refuses to print anything out of tray 3. If anyone else has experienced a similar problem, your help would be much appreciated. Thanks!