Problems with vacuum cups
Hello, I received the Best Extender V4.0 a week ago and have been trying it out, but I’m encountering a problem that I can’t solve. When I increase the tension, I lose pressure in the vacuum cup. I’ve tried various ways, but the pressure still gets lost after a few minutes. The Best Extender V4.0 comes with 3 cups, and I’ve tried them all, but I still can’t fix it. Any advice? Is anyone else experiencing this