Does anything happen on a Nat 19/20 for maneuvers?

There are rules about getting a Nat 19 or 20 on Tests and Attacks, but nothing specific for maneuvers. The only thing I could find relatedly was "whenever you roll a natural 19 or 20 on a power roll, you always achieve the tier 3 result, no matter what characteristic is added to the roll and whether or not the roll has any banes." But if I already am at the tier 3 result, that doesn't feel like anything special. This may be wishful thinking on my part. I would be curious what others think.