I think they posted the pic of the carb nipple with the shaving in it for a size comparison. I don't think that piece made it's way down the fuel line and got stuck in the nipple.... Either way sounds strange to find that many shavings in his tank, but they would never make it out of his tank. They could however get stuck on the clunk I would imagine....if there were that many and maybe affect fuel mileage from clogging up the clunk as the fuel level goes down? Just a guess...