the reason is that the rate of incoming people into the pool has increased, and I am adjusting my projections accordingly, my current best conservative estimate on average number of candidates added daily with score over 401 is 245.
Here is my math:
# of candidates with 401+ score on May 12th = 7,952
# of candidates with 401+ score on May 17th = 7,952 - 3,678 = 4,274
# candidate added over 12 days since May 12th = 245 * 12 = 2,940
# of candidates with 401+ score on May 24th before the round = 4,274 + 2,940 = 7,214
# of candidates with 401+ score on May 24th after a potential round of approximately 3600 candidates = 7,214 - 3,600 = 3,614
# of candidates in the 401-410 range in the last couple of rounds ~= 3990
Since all that's left over 401 is 3614 candidates, which is about 90% of the # candidates in the 401-410 range, assuming equal distribution over the 10 points, then the score will be around 409