My Panasonic KX-P P4410 was working fine but now copies are smudged . I tried to clean printer as it had a horizonal smudge line on print jobs. Now not onlyis there a horizontal line across the page but smudges all over on print reproductions. This is far more pronounced after I removed cartridge and attempted to clean interior with tissue. Help. If this is not correct forum for this posting please advise.