I've inherited my mother's FW (yes, the one I learned to sew on!) and would like to use it, but haven't figured out how to get an accurate 1/4" seam allowance on it. I ordered a seam gauge that screws on, but it sits over a round head screw that lifts the gauge up off the bed of the machine, and the fabric can get under it. I also know that there's an engraved replacement plate that you can get, but it's a little pricey for me right now. I don't want anything sticky. Can't find a quarter inch foot. So what's left? There's got to be a way, with so many quilters using the FW, so please share with me how you gauge your seams. Thanks.