My experience duplicates yours. In fact, it was almost comical. I set it to espresso, a few clicks down on the fine setting, default time of 10 seconds. With my beans I got 14.5 and 13.9 grams on the first two tries, and hit 25 to 28 seconds pours. By then I had had enough espresso for a while.
Next month: new espresso machine . . .
Bonus: I now have the nicest hex driver I have ever seen! [for those that don't have one, this is for adjustments]