the keys you use to go to eb from d on the right side is not working i think one of the screws is in to tight but i dont know wich one it is a mirafione with 2 octave keys and elongated forth key can you please help me fix it or just tell me what the keys do when you go from eb to d or visesersay (however you spell it) please

Take it to your teacher and have them fix it. It might need oil or maybe the joints aren`t directly put together. But don`t fool around with your oboe unless you know what you are doing. The lower joint is a whole nother world opposed to the top joint which isn`t as hard to take apart.