Help!!! I need to purchase a 1/4" pressure foot with a guide and for the life of me I am just not sure what I should buy. I have an old JCPenney machine 1710, which is not listed on their website or any other for that matter, I bought it new shortly after I got married - my sister took me down to buy her one and I ended up with one also, but I digress, I believe it is what is called a low shank?? but I'm not sure if any of them will fit or not. If somebody out there can help I would be greatly appreciative.