I Never got dry lettuce or greens and used it maybe once a month., until the pump broke.  Bought another on the list.  It did not last long either, then bought another which still works but does not dry either.  I am looking at the manual spinners and using my terry cloth homemade case which I used for years.  It dries and shaking it is not that hard.  some times old fashioned is better.  I've been cooking 76 years so I ought to know.  Anne