This is my first mouth harp ever and I needed some Youtube advice to start playing. After couple of weeks I am able to make sounds including bending, but not playing of course. Harmonica is comfortable to play, all contact sites are smooth. For some time I was having suspicion, that something is wrong with 3rd hole draw, the sound was much less clear compared to 2nd or 4th hole and with bending fainted even more.So I blocked out two holes on either side with plastic tape and the 3rd hole was howling like the ship's horn all the way down and up the bend consistently. So nothing is wrong with the harmonica, all I can blame is my poor playing technique. Moreover this experience showed me the trick how to get perfectly clean isolated draw bend for recording.