Excursion Tail Pipe Drag

Thanks for your replies. We bought the Excursion. A Freightliner service center checked the ride height and found it to be slightly higher the manufacturer's specs. I talked to a Freightliner customer service rep about modifying the chrome tail pipe extension and was told not too change anything or it would void our warranty. The service mechanic asked the rep about extending the skid bars by adding a few washers to lessen the tail pipe drag. He was told that that would also void the warranty. So I'm being very careful about the driveways I enter. Again, thanks.