So I need some help thinking this through. About a week ago I sumped some metal from my right wing tank. Looked like metal filings (very small) and about enough to cover half the end of a pencil eraser. It’s not magnetic and looks like very shiny brass. I did not find it in the left tank and not in the header. I Stumped again and got very little more if anything.

Since then I’ve run the engine quite a bit. A couple flights in the pattern and balanced my prop. I did not find any more on any of those engine runs until yesterday. Same thing and amount came out of the right tank. This was just after refueling. I was suspect of the fuel but I have not found any in left tank and both were filled.

This time I may have found some in the header but I’m not sure if the cup was just contaminated from the right tank being sumped before.

any thoughts? I don’t know where this metal could be coming from. Thanks!