I have a senseo one cup coffee maker. I bought the my pod attachment from walmart so that I can grind my own coffee beans instead of buying pods. I haven't been able to get it right. The coffee is always weak and watery. I have ground the beans regular and fine but still weak. I have tried to use more coffee but then the machine leaks. Does anyone know what I am doing wrong. How do you use the my pod correctly, or does it always turn out that way? thanks for any input.