Errrr, ok. I've never had to ask this to the customer service line but try asking if they can pick out the racquets that are closest to the specs advertised. I read somewhere that they are able to do that free of charge. They open tomorrow morning at 6:00 am or 6:30 am.
IMO, i would just save the time and straight up order the racquets. The specs is something to worry about after you get them. The chances has nothing to do with the outcome. Once you order and you find that they aren't the specs you wanted, go do all the weighing and make your modifications. I haven't noticed a substantial difference in weight for my IG Prestige pros when i first got them. They both have about the same amount of lead on all 3 of them.
Racquet : TGK238.1 2X / Head YTPP 1X
Strings : BHB7 17G 49lb / LUX 4g Rough 17G