So there's the mane fix code, and there's the fact that you have to use the fmanemask file and lock the alpha channel and color it in one layer and save that as a png, but for a scrolling texture, how does this work? The only reason I didn't do that is because the last time I tried to do a scrolling texture with a 'normal' mane (the way you make a non-fluffy mane for every other kind of preset), it scrolled the transparent parts as well, and it looked weird. It might be kinda hard to get what I'm saying since I might be doing a bad job wording this, so here's some pics.
The parts where this is transparent did this weird thing b/c they scrolled with the part that's black (or in other cases, a color besides black).
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When I used this for a preset I'm working on (its mane is supposed to scroll this texture),
the scrolling code and the picture work perfectly fine, except for these weird square things that aren't supposed to be there.