I cast on 38: 9 one needle, 10 Needle 2, 9 Needle 3, and 10 stitches Needle 4. I knit 2, purl 2 ending with a two knots on Needle 4, which then means I should purl, purl for Needle 1, but it should be knit. It seems that of I follow this train of thought the knitting and purling will all be off and ribbing will be wrong, so do I just follow original round?
38 divided by 2 is 19 groups of 2 stitches per group. An odd number of groups worked in a 2 x 2 rib in the round will end in the same stitch as you started with at the end of the round. This ends up putting 4 purls or4 knits together. For the 2 x 2 rib to work in the round, you will need an even number of 2 stitch groups. In this case either 18 groups of 2 stitches (36 total stitches) or 20 groups (40 stitches).