First thing I would do is make sure all the DV settings in the sims mode are set to factory defaults. If someone has played around with the settings it could create havoc. And now from far left field, your picture reminded me of a problem we had a number of years ago on an older model that looked very similar. Turned out the fuser was not heating properly and the press roller had ridges on it. Apparently the fuser would push unfused toner and then fuse it creating the wavy pattern I saw in your example. Just a thought.
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