My 8-year-old and I were ready to sign up for our third MS150 ride in Pittsburgh when we saw the new rules that all participants must be at least 12 to ride this year. My son was old enough at 6 and at 7, but now 8 is too young! We are really heartbroken. Has anyone else been affected by this new rule and any ideas if or how it can be appealed. I can see the need for a rule for kids solo but on a tandem with their parent should be pretty safe. We are very disappointed.. We had two other tandem teams planning to ride with us this year that are also affected.