Remember that Grado is purely analog :) No RA numbers or computerized tracking of repairs....I sent a pair of SR60's to them last year and went thru much the same anxiety. But, 2-3 weeks later my repaired 'phones showed up totaly unanounced. Since they were out of warranty, Grado just tucked a repair bill in the box - no waiting about while they mailed out the bill and held return until it was paid.
Old fashioned but I kinda like that business model....
Old fashioned but I kinda like that business model....