http://www.auto-motor-und-sport.de/...zu-red-bull-kommt-drei-mal-davon-5305748.html "The third case became known on the brink of the Hungary GP. In Montreal the FIA inspectors found an illegal mechanism to change the third damper on the front axle. The damper setting affects the front axle ride height, which must not change between quali and race. Because manual changes are difficult to detect for FIA inspectors, the FIA came up with the rule that all suspension changes must require tools. In the case of Red Bull however changing the setting was child's play with the bare hand. If someone wanted to think evil he could insinuate that RBR changed the ride height between quali and race in the preceding races. The FIA told RBR to cease using this mechanism without making noises. Rules experts say that it would have been easy to DQ RBR over this in Montreal"