Thanks for sharing your new recipe. I'm surprised you added more protein to them, that is a lot of protein. I wouldn't bother using multivitamin juice myself, since there's already plenty of vitamin fortification via the Huel itself.
I need to make up a new batch of bars myself. I got lazy after I bought some of the new vanilla flavoured low'ish sugar Twenny bars, but I don't think they're as healthy as the home made Huel bars. They do have a slight effect on my digestion system too (not really bad, but enough to make me never eat them for a whole day).