Every time there is a discussion of the benefits and drawbacks of the various kalashnikov drum designs, somebody states that the Chinese type is superior because it can be stored loaded, but not under spring tension. This is then stated to be preferable because the top-loadings designs will somehow wear out while sitting around loaded.
I know it sounds silly, but I have heard it many times. I'm somewhat amused that there are so many who have not heard it. Maybe drum myths have faded recently.