Norm,
Sorry to hear you're having trouble with this.
I don't have any experience with them directly, just in extended waranties in general.
Once when a high pressure tube on an automatic tranny couldn't be replaced under waranty because it was a 'hose' which isn't covered.
Once when excessive play in steering couldn't be covered under waranty since it was a manufacture defect & this was an aftermarket plan.
Once they tried 3 times to get rid of a fuel smell inside a vehicle. They finally determined that the problem couldn't be fixed so they didn't have to try any more.
Good luck with your arbitration.
Tom