http://www.bicycleretailer.com/sites...etin%20N°4.pdf

According to this bulletin effective 2014 you can morph yourself to the bottom bracket centerline without having to prove you need it. Tips of bars may go to 80 cm as well, but not both. Pad height to bar tip height 10cm or less difference.

My experience has been that tweener years or years where the National federation might have a different rule...confusion reigns. I had an official argue with me about Masters track nats rules a few years ago so I produced an email from the head of USAC's officials confirming what I was saying.

The response was "well, he didn't tell ME".

There are more than a few officials in this sport that have the who's paying who relationship backwards.