Using magnets with the minibot motors

[2011FRC0341]

One of the acceptable materials for minibot construction is "magnets". Is adding magnets to the outside of the Tetrix motors (increasing the strength of the flux from the built-in permanent magnets) considered a modification of the motor - even if said magnets are external to the motor itself?

(Our team makes no claims that the science behind this technique is or isn't flawed, we're just asking if it's legal)

[GDC]

There are no rules that would prohibit this.