I'm trying to print a 14 x 19 inch print on 17 x 22 inch paper on my 24 inch Z3100. I have chosen page size C on sheet media and everything seems to be alright. However as we get near the end of the printing, the printer stops, does a little puttering of the printhead for a few minutes, then it returns to printing all the way across the paper but comes up an inch short from the end of the print. I have tried printing a bit larger (15 x 20) and it still stops before the end of the image, although a half of an inch further from the end of the paper. Any ideas as to what could be going on? I am running the latest HP software for Mac 10.10, which was just updated on the April 14th.