Kenmore 158.17300
I got this machine from a thrift mall and it sews a straight stitch and zig zag stitch just fine. I finally found a set of cams for the thing, but it is not sewing all the cams right. Any of the cams that call for the "red dot" setting do not sew the pattern. Any that are supposed to use the "white arrow" setting are doing fine. This is the first time I have ever used a machine with cams or even saw one used. So I am thinking it's me. I do have the manual and have followed the directions and rechecked settings, still no go. Any experienced "cam" people got any ideas or advice?