Warranty on novak?

[Nephre]

Just wondering how the warranty of novak works? Reason is that I reacently bought a Novak Mongoose 10.5 for a friend to have in his Vendetta ST and it hasn´t really worked that well and yesterday it smoked on him, he says that the esc probably smoked because of a bad motor. I think the warranty should take care of this since he has been running it within the specs and he have had it for three weeks at the most but the question is, should I contact Towerhobbies who I bought it from or should I contact Novak?