ive had 4 #4's for a while now. one of mine clanked like that once and it was the washer missing like i said.
i have to agree on the customer service. when i got mine it was right when they first came out, they didnt have the deflector with them like the new ones do. i sent an e-mail asking about if i could get a deflector and got a response in 10minutes. no questions asked but how many do you want. get them two days later