Getting back to the original question, the Westlakes were fine although the factory had to send a replacement to the dealer as we found a screw in one during the PDI. I wouldn't have an RV without leveling, it's been great.
We use the Rand McNally RV GPS & it has served us well with the Class c, I have entered 14 ft as the height of the CC just as a safety precaution even though CC is showing it as 13'2". FYI RTE 400 in Ontario has a few older overpasses north from Toronto that post height of 4.2 meters (13'9') in the outside lanes & direct trucks to use the center lane.