This new option is a great feature, however, it is set up illogically in that to extend the stem length one must first shorten it. The value starts at 0 and does not begin to lengthen until the value of 7. It would be more user friendly if the value to shorten the stem would be a minus factor, i.e., -1, -2, etc., and lengthening would start at 1.
Or at least to have its current length displayed so that you can click it up or down. Guessing/measuring the length of a beamed stem is tedious.