The record-breaking speed of the Whistler Olympic luge track was such a concern to the sport’s governing body that its president wrote a letter to the track designer saying the course was not what was agreed upon, a coroner’s report says.

But the luge federation wasn’t worried enough to order Vancouver organizers, who received a copy of the letter, to make structural changes, according to coroner Tom Pawlowski’s report.

Pawlowski concluded that speed and training decisions played roles in the horrific crash that instantly killed Georgia’s Nodar Kumaritashvili on the opening day of the 2010 Winter Games.