i have my passenger side seat belt assembly sitting here in front of me on the desk trying to fix it because it wont let any seat belt out. The reason being is that the seat belt rolled up in the retractor has a twist in it, i can feel the bump. that bump is jamming the whole seat belt and it wont come out
Mine never came with the head rest guides but i attached a picture of the assembly. The red arrow indicates where there is less seat belt than on the other side, on the other side there is so much seat belt that it is jamming itself.