I have been doing volume 1 for 3 days now. With the vowel modifications I am able to do the loft for the aa and ah but I can not do the hook, i dont know if im just doing it wrong or im not understand exactly how it is suppose to sound. The e modification i can not get at all. I try to do it and nothing, it doesnt help. Im looking for advice if you have had this problem and you know how to help.