u/theauthorofthewrong

I bought this online and they guaranteed it to work for my machine but I can't get it to stop making horrible noises and stopping or going too fast. Singer 301 with a p60448 walking foot.

Please help I'm about to lose my mind and the seller is absolutely no help. I tried loosening and tightening the presser foot tension

I also can't get put a denim needle in because I can't get it to stop hitting the bobbin case if I put it in, it's in as far as it can go loosening the thumb screw and the set screw on the other side. Any ideas on that?