You didn't do anything wrong with with Casey. Your bag seed, like almost all the seeds we purchase, was probably a hybrid. Some hybrid strains have been bred to themselves for many generations. This can yield seeds that are reliably like their mothers - they breed true. BUT ... in most cases the hybrids are a cross of 2 parents with desirable traits that predictably reproduce those desirable traits. While the purchased seeds are usually predictable, the seeds of the seeds are a total hit and miss. The seeds do not breed true to the mother plant, even though the mother plant bred true. In the world of commercial crops like (non-hierloom) tomatoes this is nomal. A grocery store tomato will almost never yield a good tomato plant. I am 98% sure Casey had a good mother but she did not breed true.
I dry the buds, in a box, bag or hanging, until the stalks make a crack sound when they are bent. Conditions vary but at least 5 days and often 15 days. Once the stalks make a sound they are ready to smoke. If you store them for months, with good humdity levels, the taste usually improves. I am current getting rave reviews from my wife for a girl that dried 9 days. It might be tastier smoke after 3 months in a jar, but it is smooth and potent smoke today