Ho I have had one of these for christmas with a few minutes of using brand new out the box .a pop went and the left side pushes in and doesnt knead the foot like the right one does. It slightly grips the foot and just goes inwards very flimsy. Do you happen to no why this has happened ? .it was bought off ebay and they dont want a return but I love it and would love to beable to fix it thank you
