I really hate this stuff, I actually get stressed out when I know I need to work with it. I have tried everything, putting it in hot water, blowtorch, microwave, it is just the pits to work with thi...
Unfortunately, you can pretty much count on anything made of vinyl that comes from China will be stiff and dimensionally unstable. Power cords, flooring tiles, vinyl trim, doesn't matter. It's a shame how we keep having to reinvent the wheel.
If that stuff didn't come from China I'll...........eat three servings of shrimp and grits! :W