I've been using a makeup sponge for the Tim Holtz distress inks. However, I've been watching You Tube and the blending tool looked like the thing I needed. A lot of you have said you keep a separate pad for each color and keep it attached with velcro to your ink pads. When I went to change the little pads, they come all apart. They stick so firm to the velcro on the tool that they won't come off intact. What am I missing?