Cuben Fiber has grease looking spots in material

[Soupbone]

I bought a cuben fiber tarp that has a a row of dark looking spots along both sides. They are between the material and look like grease spots. Is this common to this fabric? Will this affect the duribility and maybe turn into a problem later? Also had piece of material laminated in between layers. image.jpgimage.jpg

[mtntopper]

Did you buy it new?

[SilvrSurfr]

Photos three and four are pretty common on cuben fiber, but I can't tell what's going on in photos 1 & 2.

[Soupbone]

Sold as like new to me. Exchanged to Mfg. by customer. I was offered it with $25 discount.

[Soupbone]

It has a thread/string caught between the layers. Maybe 4 inches long. Second is close up of grease spot. Size of a fingernail.