So I have been trying it for about 2 months now, not super religiously, but i have been putting in substantial time every week. I seem to have hit a wall around the 16th notes at 100bpm mark. I can only think that i am just not doing it correctly, because well, that isnt fast at all. I am going T-M-I-R, my thumb is parallel to the strings, and I strike the strings with the tips of my other three fingers. I pretty much hit the top of the string with my thumb, and bottom of it with my fingers. I am comfortable playing any pattern i can think of this way, but i just cant get past 100 bpm. It took me about a month to get to 100 bpm and ive been there about a month.. I can play straight 16ths faster on one string but i cant play scale and skips strings etc. at anything greater than that I do not have a ramp, is this the problem? should i get one? How long did it take you guys to get this technique?