I had to take my TT back to the dealer to exchange my wdh bars. During the course of working on my trailer, I struck up a conversation with the Service Mgr. He told me that the owner had actually received complaints as to the length of the PDI. He said that some people were in a hurry to leave with the RV, and others had previous RV ownership and did not want or welcome a lenghty disortation on the basic systems. Maybe the dealerships should inquire with the buyers as to how much experience they have with RVs and how much help or assistance they may need. If they need extensive explanation and assistance, then schedule the PDI for a mutual time when someone can work with the buyers till they finally grasp the operation of the RV systems. Some folks will require much more explanation than others. I certainly would not want my PDI to last a minute over a half hour. Others will need the best part of a day till they grasp all the systems.