I've just purchased a BallStar Optima BCM201A ball cleaning machine. When I bought replacement pads for it they arrived substantially larger than the ones that came with the machine. The original ones are about 7.5 inches and the replacements are about 9 inches. They fit in the machine, but they extend under the rubber retainer unlike the originals. I'm concerned about them damaging the retainer when run. However, the packaging they came in has exactly the same chinese numbering and symbols as the originals, too the character. Has anyone else run into this? Did I get the wrong pads or did they increase the size for the replacements? 