What is the best way to change the cable (part 8) on te WMGG-20 mini-stepper? There is not enough room to remove the bolt in order to remove the cable. I can unscrew the bolt but there is not enough clearance between it and the body to completely remove the bolt. The stepper was already assembled when I bought it and I tried to remove the entire foot pedals but it is like the screws are welded on or just super tight.