New Keurig 550 questions

I purchased a new Keurig after burning out my old one.

I always purchased a re-fillable cup to use which is working great and allows me to use my local roaster.

Question - When others use the 10-ounce and strong feature is there a clank-clank-clank noise when the brewing starts? And it takes a few minutes for the coffee to drip through the cup…is this normal as well?


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Bessarabsky Market, Kyiv. Ukraine
Credit: Juan Antonio Segal, Flickr