and tuck positions referring now to fig8 and 9 there is illustrated a further embodiment of this invention in this embodiment a knitting needle 226 is provided and has a butt 226a thereon a selector jack 234 is substantially identical to the previously described selector jack 34 and has a butt 234a thereon a rocker base 240 is also substantially identical to rocker base 40 and has a butt 242 thereon a rocker bar 244 is pivotally carried by rocker base 240 and is substantially identical to rocker base 40 needle control cams 231 are provided and include outer guard cams 232 stitch cams 233 inner guard cams 280 and tuck cams 281 all of which define a cam track t 111 cam track t 111 receives butt 226a on needle 226 and moves needle 226 between the welt and knit positions selector jack control cams 235 are provided on cam block 230 and include selector jack cancelling or deflecting cams 236 and 237 and selector jack raising cams 238 selector jack raising cam 238 is formed in two parts the first part 238a being a tuck raising part and the second part 238b being a knit raising part near the top of the tuck position for support needle selection of needle 226 selector jack 234 is caused to rise up part 238a of cam 238 to the tuck position part 238b of cam 238 is withdrawn to a position where it will not be engaged by butt 234a on selector jack 234 such that needle 226 remains in the tuck position needle butt 226a moves.