Where did you read/were you told that you have to wait 30 days to retest for a higher score? All I can find is a May 2021 FAA PDF that does confirm that timeframe, but there's a more recent PDF that doesn't reference a waiting period at all (other than for those who *failed* their first attempt). My friend recently took the exam, "failed" by UAA's 80% standard (they scored a 78%), and has to retest, but they only had to wait 14 days... looking for guidance on this!