If one is really Sri Guru, even if he is a madyama-uttama, then the power of Krsna or Mahaprabhu will act in him because he is a representative of Krsna. Krsna has sent him. If an ordinary person, like a kula-guru, is not qualified but his disciple has the idea that, "My guru is Krsna," and that disciple has worldly desires, his worldly desires will be fulfilled.
How? Because he is thinking that his guru is Krsna. If his desires are not fulfilled, the blame will come to Krsna. Krsna must therefore fulfill those desires. The disciple should be sincere even if he has a kula-guru. If there is no sincerity, he will achieve nothing. Srila Sanatana Gosvami has written that even if one worships a dry straw, thinking that it is Krsna, he will get some benefit. Somehow you should try to obey Sri Guru and Vaisnavas. Honor all Vaisnavas, otherwise you cannot serve Sri Guru. He will not be happy.
Murwillumbah, Australia: January 24, 2001