Weird Texture On Custom Armor Model

Hello, I have a problem with my custom armor model. Weird texture appears on the right side of the head, it looks like a stretched part of the texture and floating. The texture is mapped correctly to every part and the names of File, Model Identifier and the texture are all the same. Also the pivot points are correct.

Here is how it looks in game and how it looks in blockbench:  

I tried different methods and searched the forums but everything I do seems to be correct. Please help.