I bought a 4080 from a guy on ebay. It didnt occur to me to ask him to send me his receipt for poss future rma until I sold my 4070 and offered it to the guy i sold it to. It was new and still wrapped but that doesnt mean anything i guess. Anyway I had a 180 deg conn melt on it and now going through the process. They of course want the sn from it and the only receipt i have to provide is one from ebay. If this was hot, is there a way they can tell by that number? Do you think only having an ebay receipt will be a problem? Any and all input will be appreciated.