Please add this person to your block list: buena-suerte
Will attempt to contest you on your measurements, make really rude and uncomfortable comments and attempt to extort feedback.
This person just ruined my night.
I hope at this point you are feeling better about the situation and have it handled, however if you don't, a simple call to ebay is all it will take and you're in the clear. If he tried to extort feedback from you, not only is that against eBay rules, but his buying account can be affected, i.e. temporary suspension etc.. and meanwhile your in the clear as far as the transaction goes cuz he can't make any disparaging comments or feedback to you at all. Just refuse his claim and call ebay and you are in the clear while he gets fucked.