It worked, it is OK now! I had to assign a new material to those parts too in order to fix the problems with the sleeves and collars. It looks like DAZ capped the sleeves as in the Karate Suit to allow more texture details, but this caused more problems than benefits... Thank you Joe! I was sure it was a problem of inverted polygons and spent last night to find out which one had inverted normals... sigh!