I am sorry, but reputable and responsible may not be the same thing. IMHO, a RESPONSIBLE breeder doesn't breed 2 probable carriers.
Are you saying he himself was tested as a probably carrier, or you ASSUME just a probable carrier? Unless he was tested, at the very least, insist on the testing and the official results. Frankly, I wouldn't pay money to a breeder who knowingly bred 2 carriers for love or money. Your dog that died in 2004 was almost certainly bred before testing could have guided the breeders. But that is no longer the case. I wouldn't care even it was an oops litter.
Okay, maybe if it was oops.
Nope, sorry, I still wouldn't do it. I just wouldn't. With both parents PCarriers, the risk the test was wrong on one of them or your dog would be too much for me to want to knowingly take on. With so many dogs available from Probable Clear/Clear sire and dam or Probable Clear/Prob Carrier, why take the risk?
And for the record, I have a probable carrier rescue. I strip test my probably Clear and her. But yeah, if I had a choice, I'd have BRAT test all dogs. It's an ongoing debate between BRAT and myself and I am making no headway–just upsetting myself when I think about it.