Well first I replaced the hook amd loop in Jazzys nappies, it worked fine. Then I started to finish off some pads, sewing PUL at the moment, and it went all tempermental :S
i started sewing pull the other day and i found i needed to have a long stitch and a extra loose tension other wize it was to tight. try that? eithor way i can prolly check it out sometime for ya