Textured apply to imported illustrator vectors

I worked a character on illustrator vectors. since im super fast on it And I decided to better use the textures presets native to toon boom. I choose to do this in order to have the lines textured and prevent the separation of lines and fills inside toon boom when importing the textured brushes. But then I realized, that when I add the textures from toon boom on imported curves, right one triangle, the textures looks super stretched. I decided to do a try on the polyline, and discovered it look fine, but due to be segmented in toonboom.
So I was wondering if there is a way to fix this issue, for the texture to appear nice on imported vectors.
Thanks in advance