Carb Problem--tiny red tinged fibers

[Bigdawg88]

Carb job after carb job...going on for MONTHS!!

My mechanic keeps finding these tiny red tinged fibers in the carbs....we cannot figure out where they are coming from. Filters haven't helped. My kingdom for any help...PLEASE!!!

[boats.net]

Could be filter coming apart, something in gas tank, fuel lines or fuel pump deteriorated on inside.