Edward T , you,re absolutely right.
it all comes down to the operator.
i worked in a yard with a turnover of over 38 thousand teu a month and the whole lot got new identical machines.
the machines that broke down most often were the ones with operators who were stressing under the workload.
i know the question doesnt apply to containers but it goes to show.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.