Help with shawl collar on Waistcoat


King Cole Pattern 3167 waistcoat: Am having trouble putting on the border/shawl collar. The # of stitches doesn’t seem to centre the collar onto the back. For my size the total # of stitches around is 350 so half way is 175. The pattern has me first increasing across the back by 8 stitches so a total of 358. Then 2x2 rib to stitch #200, turn and go back only 42, turn and go back 46, turn and do 50. This causes the collar to be way off center not just by the couple of increases. Any help would be appreciated. Thx


Sorry folks. My bad math. Sorted the problem and all good now.