I'm just going off of memory, so yeah it's anecdotal.To be fair, North Carolina doesn't have a large enough sample size of modeled storms like this to judge.
Can you recall a storm that ended up producing major totals over most of SC and NC that you followed that ended up as modeled 7-10 days before the event? I can't. Maybe the Christmas storm? But I'm not sure that counts. And it certainly went away for a while.