– and this can happen on the LK150 too! https://knitwords.blogspot.com/2011/02/murphys-law.html
I was reverse shortrowing the curve of the hem for my olive tunic – I started that after completing the hand-transferred Triangles of Lace. Planned to add 10 cm/42 rows from the centre out, beginning with 10 sts in work at centre, adding 5 sts back into work alternately on each side, every other row, using holding position. Because of the curve you need to keep adjusting the weights and I noticed the tucks weren't all knitting off properly. At first, I blamed it on the weights but as it kept happening, it finally dawned on me, it's that freaking sponge bar! Sure enough, it was virtually flat and I'm blaming it on the weather! I changed it out after finishing the shortrowing - don't try to do it in the middle of the shortrowing, wait until you have every thing back in work. I took the piece off on the garter bar to make the change.
You might wonder how I arrived at the 10 cm? I’m sort of copying a bought top that I love the shape of – it fits nicely at the top and bust and then is quite loose and swingy, fingertip length with an exaggerated A-line, nice and airy for hot weather. I laid it out and measured across the width at the bottom – notice the tape measure below the red ruler to record the depth of the curve.