Have an issue with ghosting on a SP C811 using 11" x17". I'm printing a newsletter two up and get most of it in the bottom of the page and although is pretty faded out you can still see it. The printer has less than 10K prints. I just read on the forum about using non Ricoh toner but on a different type of printer, which I just did, causing this issue. Anything I can do to adjust the machine so that I don't get the ghosting?