3 things, first you should rinse the filter with hot water before adding the coffee or you will get significant paper taste. second, you specified the amount of coffee, but not the amount of water, if you're guessing at the amount of water you might as well guess at the amount of coffee too, very...
I'd like to see a new review with the new burs, they are supposed to be much better, some say even better than the Vario.