I’m just beginning the set-up row 2 of the Monkey sock. The directions say to sl 1, p31. The next 2 repeating rows are (RS) sl1, K31 and (WS) sl 1, p31. I think I’m supposed to slip as if to purl on both rows, but where do I hold the yarn when I slip–in front or back? My slipped stitches never seem to come out right on one side when I do my heel flaps. Thanks for any guidance!