I have a L310. I noticed on the front panel when choosing the substrate I just loaded that it puts it into the "favorites" list after I use it a number of times. I like that HP is smart enough to add it to the list, but now the list has grown to over 20 to choose from, many of which I don't use any more, and it's very confusing to my coworkers who are now using the printer as well. Is there a way to purge the list? Thanks in advance.