Buy a short piece of 3/4" copper pipe (about 1 foot) and an end cap. Make 4 equal cuts 1/3 the length of the pipe and carefully spread the cut ends. The place the end cap on the other side, place your new tool in the opposite end of the head tube where the cup is to be removed; make sure the the cut ends are spread wide enough to rub the inside of the head tube and hit the top cap side a couple/ 3 times.. I have used this numerous times and the cups just pop off..