The shawl that I'm currently working is knit in two pieces and then joined in the center with the Kirchner (I'm never sure how to spell this word) stitch. I grafted 109 and stitches or is it twice that anyway it looked pretty good on first inspection but then I noticed a missed stitch that had receded down a couple of rows. I refused to panic. I picked up my crochet hook and worked the stitch back in place but then what? So I wove a length of yarn about 6" into the stitches arranging so it would come out at the stitch in question - picked it up and then wove another 6" of yarn into the piece going in the opposite direcition. I have no idea if this is the right thing to have done. I simply couldn't figure out how to go backward through the Kirchener stitches. I'm going to block it tomorrow night so if anyone has any thoughts on a better fix please let me know. I have to say that my patch job is very hard to spot but will it stay in place over time? Will blocking make it even stronger or less so?