I'd say we have a pretty good argument for using the originally published rate for the spread if our LOS doesn't redo the calc. The rule says the spread is "the difference between the covered loan's annual percentage rate and the average prime offer rate for a comparable transaction as of the date the interest rate is set", and that we may "use the average prime offer rates published by the Bureau". So, in my opinion, if the table had the wrong APOR on the date the rate was set, we can still rely on that rate. Even if they change an old rate 3 weeks after it was originally published and the rate was set, that still isn't the APOR they had listed in the table on the date we set the rate.