I wouldnt sweat the extended warranty booklet, I believe NCRS is going to soon figure out that wasnt factory provided. I may be wrong but that where I stand now, and discussed this with the NCRS people in Orlando this Jan when my 89 Hardtop Convertiblk took Top Flight.
PS found MANY error in the C4 judging guide at the NCRS event, the C4 is new to them, and they are still fine tuning it, I didnt tell them I was a Bloomington Gold C4 judge, I just kinda explained some of the things and how to verify them and most of my hits were reversed by the senior official in charge. They are pretty fair minded if you have your facts in order. AND bring your build sheet, I was told the shocks on my 89 COULD NOT have come that way from the factory (till I pulled the original build sheet)