Yeah, that's where it becomes less problematic to be that picky. We could test at almost any time - usually took about a week or so to schedule it, and if you failed, you were required to wait at least 2 weeks (longer at higher ranks, IIRC) before re-testing. At brown and black belt, the possibility of "rechecks" showed up. So, if you didn't pass as well as you should have (so, the technique wasn't at BB level), but didn't actually fail it, you'd just get a re-check on that technique. Too many re-checks would also fail.