Ettore Super Channel changing rubbers

Yes thanks, but my issue is that once the rubber has been in for . awhile, it’s really hard to remove it. Maybe it’s just my customers using the same rubber for too long. But a couple have brought in their squeegees to my shop and even I have a very hard time taking out an old rubber. I usually have to use a flat head screw driver for assistance. And then new brass clips are needed.