This is one of the more fascinating threads lately.
I think there is some country-specific difference there. KLOPP is obviously a German camera, whereas if it's KLOOP, I would suspect it might be Dutch, but if it goes CLIQUE, it's obviously French. If it goes KLANK, and only once, it was probably Russian.
Seriously though, if is consistent, and does not make a high pitched squeaking noise indicating dried out bearing surfaces, there's probably nothing to worry about.
I must admit to being acronymically challenged, but IYSWIM??????
I love the dead horse pic.