Hmm.. Well that is weird. I'm very good at coding too. But honedtly, I've never heard of a mane being blocky ever. Well, if this is the case, check to see if your mane texture isn't screwed up (By mane texture, I mean literally the texture files found in FeralHeart>Media>Textures). If that isn't messed up, then, it must be a error within the coding of your preset for sure. I highly recommend you re-install a new copy of FeralHeart, because things tend to go wrong sometimes. If you provide your script, I may be able to fix it maybe. Trust me, try one of these, it may help. If not, well try making a completely new preset and see if it happens. If still, then try deleting every single preset and try then. If it still does not work, well, I don't know.