For your info...
Most of the Newmar owners know about the extensive and I think reasonable cost special PDI at the Newmar mfg facility.
Here is another insight to be compared to some of the 3 page PDI's often provided by many dealers. That is what a Tiffen dealer offered to me as well - 3 page PDI I could review.
My PDI training as part of my current RVTechnician's course includes a 76 page technical suggestions and extensive PDI checklist, which includes a list of 32 tools, including meters and measuring devices, a tech needs to complete the PDI...and that is a generic PDI without regard to the mfg.