Well, if you cook the pasta al dante, of course its going to fall off. And you're probably using spaghetti, or something else really smooth. If this was for dinner, that's one thing. But for audio, you need to get a rough pasta like rigatoni, and over cook it. That way you have more surface area to work with from the ridges in the noodles and over cooking it means more drying time, which allows for better bonding.