DJC,
Much discussion on this subject for both the F53, E450 and E350. I have a relative who also recently acquired a coach on the F53. It is my opinion that these chassis need to be fine-tuned with the help of your checkbook and it is worth the investment in ride quality and your vacation experience. I would suggest that you talk to a RV service center and not necessarily a dealership. I would guess that they would start with weighing your coach so that the correct tire pressures can be recommended. Next, an alignment with a Saf-T-Plus return-to-center stabilizer installed for steering comfort. Next, good quality after-market shock absorbers made for the RV. My relative also had air bags installed but that is a bit expensive after doing the previous items. Like I said, just needs to be fine-tuned with $$$.
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