Hey Beaglegod
You've done nothin' wrong at all sometimes snakes bite no matter the kind of snake they all bite some just more than others i've been tagged 2-3 times by my BP just on the hands nothin' big LOL however my 4.5-5ft Red Tail BCI she's sly shes gotten me right smack on the lips 3 times none and let me tell you its a mess blood everywhere LOL but it doesn't hurt and its a good laugh afterwards. As for you not holding him for 10days i've gone like a month without holding my BP and BCI and they were fine with handling. I also tend to work them in cause i have kids that like to see them so i don't harrass them but i grab there tails and pet the tails and i touch they're chins just so they know that if it happens they're not as threatened by it. Better i take the bites then the kids right. Anyways that could be something you work on with your snake. All the luck to ya and don't be upset with yourself if ya get bit happens all the time.
Andrew