Michael Graves i tried some lessons last year with him private lessons and he was very ignorant to me when i didn't understand the technique or what he was explaining to me he made me feel uncomfortable and made it very uninjoyable for me so I opted to leave and i never went back now i'm in a great school with a very humble teacher!
Please people take my advice and don't get involved in Mahato's Karate you'll just end up with big head aches.