FTR, you can continue to collect diamond endorsements until May 20. All discounts (except the early bird discount) are applied via reimbursements. So, no need to rush it. Lock in the early bird by paying today before noon -- then you have plenty of time to find the diamond endorsements and get a full refund. Email endorsements -at- masschallenge.org if you still have questions. Looking forward to your entry. Thanks!