iDye Poly Problem, dark spots? RPF Costume and Prop Maker Community

I just finished dyeing a PETG visor for a custom project, and I've run into a weird problem. Two sections of the visor have patches of dark black spots (collected dye?) on the outside, and the dye seem to have scratched/etched the surface as well. Has anyone seen anything like this? I'd rather

Dyeing Polycarbonate RPF Costume and Prop Maker Community

Sauron Full Armor, Page 2

Xtremenoob's halo 4 build RPF Costume and Prop Maker Community

Statesman from City of Heroes RPF Costume and Prop Maker Community

Jacquard Products — iDye Poly

Dyeing Polycarbonate RPF Costume and Prop Maker Community

Sauron Full Armor, Page 2

Rita Vrataski's vest RPF Costume and Prop Maker Community

My Collection! RPF Costume and Prop Maker Community

Morticia Addams - Addams Family 1&2 FINISHED

Rebels - Old Captain Rex Build RPF Costume and Prop Maker Community

Dredd 2012 - Female judge RPF Costume and Prop Maker Community