i bought a batch of cheap PLA filament from china, so far i used the green, red, blue and black colors just fine. but when i came to the white color it just won't stick to the bed. Me finding this weird, decided to try doing a hot switch in the middle of a print, changing out the PLA midprint to see if it was just sticking to the glass that was the problem for the white color,But alas, that was not the cas,e it refused to stick to the black PLA (what a racist white PLA) and would just loosen off. My question then, did they maybe send me the wrong type of filament`? Maybe what they claim is white PLA might be something else? maybe ABS? how can i check?Considering just throwing the whole 1kg roll of filament in the trash.