Take care of your customers and they will keep coming back. Just my 0.02, plus you know how it would feel the other way around. If he did get them and was pulling fast one then I would put a foot in his XXX. But what goes around comes around so you should do what you feel is right!
The lucky owner of a Stage VI Aztec Red 1991 300ZX Twin Turbo and a Tan 1996 Maxima SE.