Tav with a right foot bent

Tav that its right foot is bent inward as the left foot, or outward as picture given, is accepted as pasul because of shinui tzura.

The question; is it so pasul that it can't be fixed in Tefilin and mezuzos, or at least since a tinok would recognize it as a tav it can be fixed by adding ink to widen the foot (so that there isn't a bend, just a slant)?

Minhas Yitzchok vol 6:4 (section 6) in regard to right foot bent outward [as the picture inclosed] that this isn't so much of a shinui, and at least after a shaylas tinok may be corrected in Tfilin and Mezuzos shlo csidran. But Sheivet Halevi vol. 5:8  is more machmir, doubts the opinion above, and is choishesh it can't be fixed because shlo csidran.

From the argument itself I would conclude that this pasul isn't so clear, IE it isn't obvious a shinui tzura otherwise there wouldn’t be an argument; so there is place to be meikal and fix it.

I may add to this that the Mishnat Hasofer p. 91 in Yalkut Hasofer is meikel a bit more – that if the blita (the part that bends outward) of the left foot is wider than the one of the right foot, it is kosher bdieved and may be fixed [it seems that he is posing this as his Rebbe – the Sheivet Halevi's opinion, although in the Sheivet Halevi itself such a distinction isn't mentioned]. (accordingly the tav is only pasul when the blita on right is equal to the left. A svara to advance R. Shtern's stand, may be explained: as long as the left foot with its special tzura is dominant it is eikar, and we look at it as the basic {special} foot of the tav).

All the above is when the right foot has a clear bend indicating an additional piece to the regel [an additional moshav, either inward or outward] IE it would be kosher for the left foot. But if it is only wide at the bottom of the right foot [as in Dovids post yesterday], and such a moshav would not be kosher for the left foot, there is no problem at all to fix it, even by scraping away the additional thickness.